wikidata query examples

}. don't use the wdt:P31/wdt:P279* property path. Two comments: * Activating the tag cloud in the UI was not very intuitive to me. Youll also be able to modify and save them yourself to better understand how they work. Semantic integration is the process of interrelating information from diverse sources, for example calendars and to do lists, email archives, presence information (physical, psychological, and social), documents of all sorts, contacts (including social graphs), search results, and advertising and marketing relevance derived from them.In this regard, semantics focuses on the organization of and . Enter your email address to subscribe to the Wiki Education Foundation blog and receive notifications of new posts by email. # A result is a change from the previous date if ?president's presidency ended the day before ?date. For the first example in this QuickGraph, I will use a . Irreducible representations of a product of two groups. Each different kind of query will include example queries that demonstrate everything you can get out of Wikidata. (Before you get too far into the list of queries, note that the RDF Dump Format documentation page, which I will describe more next time, has a list of the URIs represented by the prefixes in the queries.). Your email address will not be published. For sample queries, I have my own queries that I use to explore a dataset, as I described in the "Exploring the Data" section of the Learning SPARQL chapter "A SPARQL Cookbook", but the wise people behind Wikidata have done much better than this by giving us a page of sample queries that highlight some of the data and syntax available. # By User:Ainali with the help of User:Dipsacus fullonum 2021-02, # Safeguard to not get a timeout from unbound items when using ?item below, #title: Find statements with references containing external links to wipo.int, # Description: Find item statements with references containing external links to wipo.int using http and https protocols, #title: Find metadata like artist and license for an image, # Change here to select any other image, by changing item and property, # The following line transforms the image to be used in the Commons API, "http://commons.wikimedia.org/wiki/Special:FilePath/", # Below is the call to the Wikimedia Commons API, "imageinfo/ii/extmetadata/LicenseShortName/@value", "imageinfo/ii/extmetadata/LicenseUrl/@value", #title: Getting pageviews for all articles in a category, # To change language version first change here, # then also change to the same language here, # How many days back in time to get the pageviews for, #Combine the Wikidata Query Service and the OpenStreetMap Sophox query service, , , , , , , #Get information of Europeana item using federated query, , , , , #Get share of renewable energy in electricity using Federated query, # Read share of renewable energy in electricity in EU countries from http://semantic.eea.europa.eu, # and populate the result with finnish and inari sami labels from Wikidata, , , , , ?Share_of_renewable_energy_in_electricity, # Route query through zbw.eu as semantic.eea.europa.eu is not visible to query.wikidata.org, , , # And populate the result with finnish and inari sami labels and flag from Wikidata, # Filter out Kingdom Denmark and Kingdom of Netherlands, # Get OpenStreetMap nodes with inarisami label in wikipedia but without inarisami label in OSM, # title: The best ranked properties and values of a given item, # Based on the "winwaed"'s answer on Stack Overflow: https://stackoverflow.com/questions/56486888/how-to-get-property-labels-from-wikidata-using-sparql, Last edited on 1 September 2022, at 13:57, Values of "uses" used in scholarly articles, contains the administrative territorial entity (P150), located in or next to body of water (P206), wikibase:box with West and East corners (Q26211177), https://www.wikidata.org/w/index.php?title=Wikidata:SPARQL_query_service/queries/examples/advanced&oldid=1718705433, Creative Commons Attribution-ShareAlike License, integrates a text search for the template's name using the MediaWiki API into a SPARQL query. NOTE: You must be a logged-in user in order to run these Commons SPARQL queries. Asking for help, clarification, or responding to other answers. Its ambitious goal is to structure the whole human knowledge in a way that is machine readable and it speaks well to . How does the Chameleon's Arcane/Divine focus interact with magic item crafting? enriching a knowledge graph with data from Wikidata. Listeria will add more information from that item. One of the nice things about trying examples in the Wikidata Query Service web interface is that there is also an option to render the list of results as a map. Maintenance: Queries can help define metrics, track progress, and evaluate item completeness. Your email address will not be published. Examples. This page was last edited on 1 September 2022, at 13:57. These queries are mostly useful for developing bots and external services. Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Well, you're absolutely correct. TheWikidata Query Service(WDQS) is one of the most effective and efficient ways to help you make sense of all that data on Wikidata. Many of the examples also work in {{Wikidata list}}template calls parsed by the Listerbot, which however requires the ?itemfield variable to be selected. are included. WikidataQueryServiceR is a R library that targets Wikidata Query Service (WDQS), the official SPARQL endpoint of Wikidata. To really learn about how Wikidata executes SPARQL queries, the SPARQL query service/query optimization page provides good background on how Blazegraph, the triplestore and query engine that Wikidatas SPARQL endpoint uses, goes about executing the queries. Watch this space. Ha szeretnl rteslni az j hrekrl, vedd fel ezt a lapot a kedvenceid kz. A more concise version is shown below: Next wed like to pull in the country of citizenship, which is property P27. #Interesting maintenance query that shows the relative prominence of a country's current (living) population on Wikidata. I think well filter our query further to keep the one that returns a Wikidata URI, which means that we need to update the predicate in our query to be rdfs:label. In this QuickGraph, I will show how to use the Wikidata Query Service to get data into Neo4j. Take note of the item number for "dog" from the Wikidata page that opens (Q144) To change your query from "cat" to "dog", simply replace Q146 by Q144 in the SPARQL query editor. Contents 1 Example: Goat locator service 2 Extensions 2.1 WikibaseQualityConstraints 2.2 Deepcat search 3 Services 3.1 Recommendation API 4 Gadgets and user scripts If we run this query, well get the following results: https://en.wikipedia.org/wiki/Nick_Kyrgios, http://www.w3.org/2000/01/rdf-schema#label. All structured data from the main, Property, Lexeme, and EntitySchema namespaces is available under the. If he had met some scary fish, he would immediately return to the surface. Lets start with the most important takeaway right now:querying is how a lot of people read and use Wikidata. Since version 1.0.0, this library also provides a function named get_example to get queries from the examples page. # Optionally, find English labels for city and mayor: # If available, get the "ru" label of the country, use "en" as fallback: # In addition to the original query this one comes with some advantages: # - You will get only literals as results, (even if the values are stored as IRI in wikibase). Is it possible to hide or delete the new Toolbar in 13.1? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Why is the eastern United States green if the wind moves from west to east? I'm currently working on real-time user-facing analytics with Apache Pinot at StarTree. Even if you can't tell SPARQL from a sprocket wheel, there are lots of example queries with interesting visualizations that you can runjust look for "Examples" at the top of the page at query.wikidata.org. As I wrote in the Query Efficiency and Debugging chapter of Learning SPARQL, query engines often optimize for you. SPARQL is a query language used to retrieve data stored as RDF (Resource Description Framework) and it is standardized by the W3C. give you this: Popular surnames among humans creates another nice bubble chart. #This solution only works if the number of items returned by wbsearchentities remains reasonable. Required fields are marked *. "},"?c":{"query":"SELECT DISTINCT ?id WHERE { ?c wdt:P31 ?id. Bob DuCharme's weblog, mostly on technology for representing and linking information. WHERE { ?sub wdt:P31 ?id. } It is a powerful language to query Linked data and we can also use it to query Wikidata. #(which is backed by Elasticsearch) to perform very fast searching of entities by their label. the date that architect Jeanne Gang was a MacArthur fellow? Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Wikidata Query Service - Bug on the 'Whose birthday is today?' The Popular eye colors one demonstrates the use of Default viewsspecial comments in directives that the Wikidata Query Service understands as an indication of how to present the data. # - That means you will also get properties as birth date, alphanumeric identifier and so on. A hrlevelek 2021 augusztusig a Wikipdia:Wikidata-segtsgkrs lapon voltak olvashatk, a kzssg krsre helyeztk t erre a lapra. ), # this is an error and should be fixed at the item using P1540 and P1539 instead, # (wrong query result may be a manifestation of such), # IF multiple ?pop values per country per year exist, we prioritize by source, # census 1st, others 2nd, estimation(s) 3rd, unknown sources (none supplies P459) last, # note: wikibase:rank won't help here: each year may have multiple statements for ?pop value, # rank:prefered is used for the best value (or values) of the latest or current year, # rank:normal may be justified for all of multiple ?pop values for a given year, # .. still need to group if multiple values per country per year exist and, # - multiple ?estimate or multiple ?census (>1 value from same source), # - ?other yields more than one source (>1 values are better than optionally, # supplied estimate, but no census source available), "https://tools.wmflabs.org/reasonator/?q=", # These lines generate a calendar from January 1 to December 31, # educated at Oxford or an Oxford college, #defaultView:Map{"layer":"?instance_ofLabel"}, # List of airports that are named after women, # Written by WiseWoman auf der #wmdemv 2019, # Schools between San Jose, CA and Sacramento, CA. I previously worked on graph analytics at Neo4j, where I also I co-authored the O'Reilly Graph Algorithms Book with Amy Hodler. Why is apparent power not measured in watts? On the Wikidata Query Service, all Wikimedia sites are allowed (all Wikipedia language editions, Wikimedia Commons, Wikidata itself, etc.). wdq P361 Q544 # lookup properties and items. Example: The line graph resulting from the Number of bands by year and genre query is also interesting. Input a valid SPARQL query or choose an example query. ?s wdt:P31 wd:Q5 ; # human Powered by Hugo, Your own free, publicly available SPARQL endpoint. #Interesting maintenance query that shows the relative prominence of a country's current (living) population on Wikidata. At what point in the prequels is it revealed that Palpatine is Darth Sidious? Generating websites with SPARQL and Snowman, part 2, Generating websites with SPARQL and Snowman, part 1, Doing a podcast interview about technical writing, Taking some RDF beyond what it could do in a relational database, Wikidata's excellent sample SPARQL queries, list of the URIs represented by the prefixes in the queries, The Wikidata data model and your SPARQL queries. The query tends to time out when using all countries at once, but it might be possible to get the figures for each individual country by using uncommenting . This relies on places using P131 with Q25 ("Wales") as value (or with a value that has Q25 in P131), # look for articles (sitelinks) in Welsh ("cy"), #Definition for Occitania (Q104285) is the one defined by P527 on item Q104285, #place of birth must be using P131 with one of the "?parts" (or -- note the "*" -- a value that uses one of the parts in P131, etc. Exploring the ontology takes some work. It is a source of open data that you may want to use in your projects. Will and Reema, Sending kudos for this and your recent posts that are so informative and useful re: Wikidata. wdt:P21 wd:Q6581072 ; # gender: female Access Wikidata Query Service via command line to perform SPARQL queries ( query mode), lookup entities ( lookup ), or search items and properties ( search or psearch ): wdq -g en solar system # search 'solar system' in English. The examples for counting instances at query.wikidata.org (and elsewhere) use the wdt:P31/wdt:P279* property path. Any change to the service should account for these services' existence and requirements. # This query collects data related to entities on Barbara Harris. I thought this was the search button or something. I publish short 5 minute videos showing how to solve data problems on YouTube @LearnDataWithMark. The query tends to time out when using all countries at once, but it might be possible to get the figures for each individual country by using uncommenting . For 1) completeness and if 2) the types are not materialized you'd always have to use the path. Samples suitable for Listeria. Bob DuCharme We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. # This query can be used with PetScan to work on items that are normally not queryable because of timeouts on query.wikidata.org. Input a valid SPARQL query or choose an example query. The sample queries range from simple to complex, and each has a Try it! link that loads the query into the query form. # or if an older expresident died the day before ?date. Ill describe the resources available for this (and the ontology!) } }, # with a P6 (head of goverment) statement, # where the ?mayor has P21 (sex or gender) female, # but the statement has no P582 (end date) qualifier, # Now select the population value of the ?city, # (wdt: properties use only statements of "preferred" rank if any, usually meaning "current population"). Many of the examples also work in template:Wikidata list template calls parsed by the Listeriabot, which however requires the ?item field variable to be selected.. The GUI source is in wikidata/query/gui project and is the submodule of the main project. # Use the MediaWiki API to get the articles from a specific category in a specific Wikipedia language version. Ezen a lapon a Wikidata weekly summary hrlevelei olvashat. #Combine the Wikidata Query Service and the Mediawiki API, #https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual/MWAPI. rev2022.12.9.43105. Could also be done by using P569 and P570 in "columns=" of Listeria's template, #LIMIT to 2000 as Listeria can only handle up to 5000, #Order by date of birth, avoid overriding this in the template with sort=, #change to OFFSET 4000 to start at the 4001th item, # Sample of scientific articles missing description in any language. Interested in learning more about querying Wikidata? # ?valuenode wikibase:geoLongitude ?lon. The following list will provide you with some different styles of queries written for specific, applied purposes. The Wikidata Query Service provides a way to also ask for a label in a specified language: With the addition of the request for the label, the query now returns the same 10 . # member of Les Plus Beaux Villages de France (organisation), #sample from cywiki:Wicipedia:Merched_a_anwyd_yng_Nghymru, # OR place of birth within Wales. Wikidata Query Service There are a bunch of examples that we can pick from, but we're going to start with something even simpler than that. The Children of Ghengis Khan sample query uses the Graph defaultView to display Khans children and grandchildren, with images of them when available, in a graph that lets you zoom and drag nodes around. This query returns the entity representing Australia, but what if we want to return the name of that page rather than the URI? This query shows a way of mapping locations which span the 180th meridian, without the points being split between the left and right edges of the map. Additional variables from the query could also be used in the lists. { This file can be used to override any of the default settings obtained from default-config.json.. Run tests ), # ?parts are those listed on item Q104285 with property P527, #for display in the list, extract yob/yod. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. ?c p:P6 ?mayor. }"} Wikidata stores data in triples of the form (subject, predicate, object), so we'll start with a query that returns one such triple: SELECT * WHERE { ?subject ?predicate ?object } LIMIT 1 Admittedly its not a very interesting triple, but were off and running. wdt:P569 ?born . I look forward to trying out several approaches you offer, and the raised eyebrows that will follow as I glean the results. Wikidata stores data in triples of the form (subject, predicate, object), so well start with a query that returns one such triple: http://creativecommons.org/publicdomain/zero/1.0/. The problem is that weve returned country names in every single language when actually we only want the English version. how many female geneticist have Wikipedia articles, This query shows the most commonly used properties for describing cities, where that thing lives in this hierarchy, This query shows which properties have the most constraints, you can write queries that can tell you all about how properties relate to each other, Another successful Wikidata Project with UVA, Learn from each other: journal article walks through Wikipedia assignment, Grad student wins Outstanding Teaching Award for Wikipedia assignment, Ensuring pop culture articles on Wikipedia include the latest in disability research, Integrating student interests and career aspirations with coursework. The Wikidata Query Service uses the SPARQL query language. After reading one of Jess Barrasas recent QuickGraph posts about enriching a knowledge graph with data from Wikidata, I wanted to learn how to query the Wikidata API so that I could pull in the data for my own QuickGraphs. If we go there, well see the following screen: There are a bunch of examples that we can pick from, but were going to start with something even simpler than that. The data source. Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? This page is parsed by the web interface of the query service to fill the query example dialog. Thanks, nice. This post will explore how you can use different kinds queries to get the most out of your Wikidata experience. Yes, they can answer questions, but queries can make Wikidata a much more useful, urgent, and accessible resource for everyone. Where do Mayors Come From? #which in turn can now query the graph in a timely manner and filter those entities that are not humans. You can think of querying as defining a set of things youre interested in on Wikidata and learning more about those things. # It demonstrates collecting individual attributes and concatenating them for easier post processing. The syntax is similar to SQL, but it has some differences for people trained in SQL. You dont have to worry about concerning yourself witheverythingthats on Wikidata just the things and relationships youre interested in. Querying Wikidata: SPARQL. Are these generally oversights (or perhaps done for speed? SPARQL query service/queries/examples/advanced, List of countries ordered by the number of their cities with female mayor, Popular surnames among fictional characters, Women with most sitelinks and no image born in 1921 or later, Data of Barbara Harris - Grouped per item, People who have been buried in multiple places, All oldest living US ex-presidents in chronological order, Persons and institutions related in some way to Russian politics, Values of uses (P2283) in scholarly articles, Timeline of compositions by Wolfgang Amadeus Mozart, Firearms cartridges and which they are based on, Groups of characters in the Marvel universe, Population of countries sharing a border with Germany, Population of countries sharing a border with Cameroon, Battles per year per country last 80 years, Battles per year per continent and country last 80 years (animated), Bar chart of paintings produced per year by Piet Mondrian, Bar chart with ratio of male / female creators for public art in city of Nijmegen, the Netherlands, Continents, countries, regions and capitals, Viennese composers and their compositions by tonality, Famous people categorised into eye and hair color, Calendar of birth dates of women who studied at the University of Oxford, Samples with coordinates to illustrate maps, Schools between San Jose, CA and Sacramento, CA, Big cities, grouped into map layers by population, Basic map of U1 subway stations in Berlin, Advanced map of Stockholm metro (Q272926), Distribution of names of human settlements ending in "-ow" or "-itz" in Germany, Locations of archaeological sites, with images, Locations of castles that are also archaeological sites, All museums (including subclass of museum) in Washington, D.C. with coordinates, Map of museums in the Netherlands with a color indicating if they accept the Museumkaart (Q2237462), Map of disasters, color-coded by disaster type, Monuments and other heritage items located 1 km around the users location, Map of newspapers in the United States by presence of Infobox newspaper in their English Wikipedia article, Women born in Wales without an article in Welsh for Listeria, Scientific articles without any description, Filter labels using EntitySearch from mwapi service to provide Full Text Search, Using mwapi to base a query on articles in a Wikipedia category, Find statements with references containing external links to wipo.int, Find metadata like artist and license for an image, Getting pageviews for all articles in a category, Get OpenStreetMap top level properties of Helsinki University main building, Get OpenStreetMap nodes with inarisami label in wikipedia but without inarisami label in OSM, The best ranked properties and values of a given item, #TEMPLATE={"template":"Largest ?c with ?sex head of government","variables":{"?sex":{"query":" SELECT ?id WHERE { ?id wdt:P31 wd:Q48264 . } How to set a newcommand to be incompressible by justification? A hrleveleket automatikusan teszi kzz MediaWiki message delivery robot. It can be customized by creating a custom-config.json in the repository's root dir. GROUP BY ?id "} } }, #TEMPLATE={ "template": "The top 10 heaviest ?type ", "variables": { "?type": { "query": "SELECT DISTINCT ?id WHERE { ?i wdt:P2067 ?v. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Learn more about Teams Here are some that I particularly liked after my brief tour: The second example query, for data about Horses, is a good example of the excellent commenting that you will find in many of the sample queries. Click on the first result from the drop-down menu. Teams. Lets do that: We can navigate to that URI to see all the statements about Nick Kyrgios. Learn how your comment data is processed. This page lists uses of Wikidata Query Service inside Wikimedia Foundation projects. I think youll agree, queries can tell us a lot more than just facts. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? #Show firearms cartridges and which they are based on, #graph rendering could be slow due to large number of results, # male/female population _must_ not be added unqualified as total population (! For example, the number of humans in Wikidata: SELECT (COUNT(?item) AS ?count) W. Wikidata offers a query service for integrations. how to use the Wikidata Query Service (WDQS) how to find SPARQL query examples; how to generate query visualizations The project started 2012 by the Wikimedia Foundation as an effort to centralize interwiki links, info-boxes and enable rich queries. Along comes Wikidata Query Service. Cheers, Markus On 10.12.2015 17:12, Jonas Kress wrote: Theres a lot to Wikidata. Consider adding a comment in the query noting what it illustrates, when and by whom it was written and which are its limitations given the current data and use of properties at Wikidata. Their methods for doing so are how these query engines try to distinguish themselves from each other, so learning more about the one that youre using is worth it when youre dealing with large-scale data like Wikidata. Although its important to comprehend whats happening on the item-level on Wikidata, most community members are concerned with the relationship among all of these items (nearly 100 million as of September 2021). Connect and share knowledge within a single location that is structured and easy to search. WikidataQueryServiceR 1.0.0. Learning about the data, its structure, and more. so that entities that are a subclass of human (I don't think this type exists, but think "nobel laureate", etc.) If you're working on a project you can have a query that focuses on a set of statements. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. What we actually want to do is find triples about Nick Kyrgios, so lets update our query to do that: This query finds any triples in Wikidata that have an object that matches the English language string "Nick Kyrgios". # ?valuenode wikibase:geoLatitude ?lat. Lets update our query to return date of birth: We can simplify this query by using the ; syntax to construct multiple statements around ?person. We can return this by using the rdfs:label predicate: Wow, that returned a lot more rows than we were expecting! For example, the number of humans in Wikidata: SELECT (COUNT(?item) AS ?count) The Music Genres query after that is similar. Queries can serve many purposes and express many, detailed aspects of Wikidata. ?item wdt:P31/wdt:P279* wd:Q5 . Well done. The examples for counting instances at query.wikidata.org (and elsewhere) use the wdt:P31/wdt:P279* property path. Wikidata is a collaboratively edited knowledge base. Ive continued to explore the data and its model using two strategies: exploring the ontology built around the data and playing with the sample queries. The query service can be accessed by navigating to query.wikidata.org To do this well construct the predicate wdt:P569, where: In line with the SPARQL model of everything as a triple, the wdt: namespace contains manifestations of properties as simple predicates that can directly connect an item to a value. We can fix that by changing the fields returned in our SELECT statement, or we could use the [] operator to go from the person to country name in one statement, without needing to bind the country variable. ), or is the subclass property path not actually needed in these cases and I'm too dense to see why? WHERE In this training we will cover. The Even more cats, with pictures query that follows the eye color one uses an ImageGrid defaultView to create the following, finally filling the gap between SPARQL and cat pictures that has bedeviled web technology for so long: The remaining six defaultViews also look like a lot of fun. The deployment version of the GUI is in production branch, which is cherry-picked from master branch when necessary. SPARQL Query Examples, Wikidata property statement and property direct, Fast publication date lookup with Wikidata Query Service, wikidata query missing out countries in Europe. Wikidata is a free and collaborative Linked Open Data (LOD) knowledge base which can be edited by humans and machines. . More Picasso paintings in one year than all the Vermeer paintings? So there are two triples that find Nick. FILTER (?born >= "1921-01-01T00:00:00Z"^^xsd:dateTime) . Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? To me this issue means that the list of examples is simply too long, and instead of working around it by loading the examples from an ever-increasing list of pages, we should decide which queries we actually want to show on query.wikidata.org, and only include those on the main example page. Translations in context of "Wikidata API" in German-English from Reverso Context: ber die Wikidata API kann ermittelt werden, welches Wikidata Item zu dieser Kategorie gehrt, sowie welche Kategorie aus Wikimedia Commons dazu passt. 1 Showcase Queries 1.1 Largest cities with female mayor 1.2 List of countries ordered by the number of their cities with female mayor 1.3 Popular surnames among humans 1.4 Given names with most variations 1.5 Popular surnames among fictional characters 1.6 Women with most sitelinks and no image born in 1921 or later 1.7 Whose birthday is today? (One more nice sample query that I wanted to mention is not on the samples page but on the User Manual one: an example of Geospatial searches that lists airports within 100km of Berlin.). But then other examples such as "women with most sitelinks and no image born in 1921 or later", which is truncated here: Many of the examples also work in {{Wikidata list}}template calls parsed by the Listerbot, which however requires the ?itemfield variable to be selected. Atom feed (summarized entries) To learn more, see our tips on writing great answers. But were still returning the URI for Australia when we only want the country name. # You may open a separate column ?valUrl if you need also the IRI, # Please advise, if there is an option to put the Q-Number and/or the Language. As much as Id like to keep playing with of the sample queries, Im going to dig into the Wikidata data model and its mapping to RDF next. The eye color querys directive of #defaultView:BubbleChart means that running the query on https://query.wikidata.org will (quickly!) Wikimedia projects using WDQS[ edit] Other tools[ edit] This section should eventually find better place, for now this is the list of related tools: http://tools.wmflabs.org/wdq2sparql/w2s.php - WDQ to SPARQL translator in greater detail when I have a better handle on it all. I want to look up information about tennis players, and one of my favourite players is Nick Kyrgios, so this blog post is going to be all about him. 14 Ok so I'm trying to get information from Wikidata about movies, take this movie for example: https://www.wikidata.org/wiki/Q24871 On the page the data is clearly displayed in a readable format, however when you trying to extract it via the API you get this: https://www.wikidata.org/w/api.php?action=wbgetentities&ids=Q24871 We can fix that by applying a filter on the language of countryName: Thats more like it! For sample queries, I have my own queries that I use to explore a dataset, as I described in the Exploring the Data section of the Learning SPARQL chapter A SPARQL Cookbook, but the wise people behind Wikidata have done much better than this by giving us a page of sample queries that highlight some of the data and syntax available. How can I use a VPN to access a Russian website that is banned in the EU? Generally only include ?item as output. To do . which cities have mayors who identify as female? After getting this far, I hadnt even seen 10% of the sample queries, but I did find the answer to my original question about how to get to know the range of possibilities with SPARQL queries of Wikidata better. Production branch should not contain test & build service files (which currently means some cherry-picks will have to be manually merged). * The tag cloud pop-up is half off-screen for me, and I cannot move it to be fully visible (Firefox, Linux). wdq psearch -g es parte # search property 'parte' in Spanish. Is it appropriate to ignore emails from a student asking obvious questions? Ready to optimize your JavaScript with Rust? GitHub Gist: instantly share code, notes, and snippets. There are two special parameters, api and endpoint, which are mandatory and identify the endpoint host (wiki) and the specific API used. Run the program, and you will be presented with a list of all the famous and infamous dogs on the Internet. # - All label, altLabel and description in a given Language are included. Examples of frauds discovered because someone tried to mimic a random sequence, Penrose diagram of hypothetical astrophysical white hole, If you see the "cross", you're on the right track. (So P19 comes before P100). Consider adding a comment in the query noting what it illustrates, when and by whom it was written and which are its limitations given the current data and use of properties at Wikidata. Configuration. Thanks for contributing an answer to Stack Overflow! How long does it take to fill up the tank? Last month I finally got to know Wikidata more and saw that it has a lot of great stuff to explore. Take one of our Wikidata Institute courses: wikiedu.org/wikidata. # - The list is ordered numerically by property number. # Then use this results as usual in a query, in this example a simple query for the gender. With more than 79 million items, . If youre new to querying, thats great! #This query will first contact EntitySearch (an alias to wbsearchentities), #which will pass the items with a label of "soriano" it found to the triple store. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Some queries that no longer work were moved to a subpage - they need to be updated to use Wikidata federation service instead of assuming that all Wikidata data is present in the same database. Why would Henry want to close the breach? # ?statementnode psv:P625 ?valuenode. One piece of information that wed like to extract is his date of birth: We can see from this screenshot that date of birth can be accessed via the property P569. What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked. A piece of it is shown above. # people and institutions that have the affiliation attribute assigned to Russia, #TEMPLATE={"template":"Overall causes of death ranking of ?thing ","variables":{"?thing": {"query":"SELECT ?id (COUNT(?id) AS ?count) WHERE { ?sub wdt:P509 ?y. The API endpoints are pre-defined in configuration; see below. Connect and share knowledge within a single location that is structured and easy to search. ?i wdt:P31 ?id}" } } }, #title:Values of "uses" used in scholarly articles. . Wikidata offers a query service for integrations. Per default the Wikibase Query Service GUI is configured to be used as a local development test instance. The Recent Events query nicely demonstrates how Wikidata models time and how a query can use that to identify events with a particular time windowin this case of this sample query, between 0 and 31 days ago. Filter out results that don't fulfill this. # but MINUS or negate any of those things that are instances of human. It is a source of open data that you may want to use in your projects. Features: Map (Q24515275), wikibase:box (Q26211169), wikibase:box with West and East corners (Q26211177). And thanks to Jesus for his help with understanding the SPARQL syntax enough to get my queries working. Notify me of follow-up comments by email. RSS 2.0 feed (full entries), 2022 Find centralized, trusted content and collaborate around the technologies you use most. The Wikidata Query Service ( WDQS) provides a way for tools to access Wikibase data, via a SPARQL API. (I found it pretty gutsy of this pages authors to add a Try it! link after a sample query that the page itself says will time out.) Japanese girlfriend visiting me in Canada - questions at border control? . These queries show the power and functionality of SPARQL and WDQS GUI. The SPARQL query service/query optimization page also describes how adding an explain keyword to the query URL will get you a report on how it parses and optimizes your query. cURL examples to query Wikidata. Q&A for work. Add a new light switch in line with another switch? # ?item p:P625 ?statementnode. # Demonstrates how to turn off the optimizer and start with the lowest number of edges first. Making statements based on opinion; back them up with references or personal experience. # This query collects burial places of individuals, and sorts them in decreasing order, # All persons who have been the oldest living US ex-president with dates in chronological order, # Dates where who is oldest living expresident can change, # Find the age for all living expresidents for each value of ?date, # Find the oldest age for a living expresident for each value of ?date. Examples. The following query does this: Thats all the data that we want to extract for now, but if we wanted to get more stuff it wouldnt be too difficult to extend our query. It provides a simple function query_wikidata that returns the results of a query. SELECT ?s ?desc ?linkcount You can also think of it as a detail about something, for example: does Wikidata have the date that architect Jeanne Gang was a MacArthur fellow? Language used to retrieve data stored as RDF ( Resource Description Framework ) and it is a of... A lot of people wikidata query examples and use Wikidata they work generally oversights or... Education Foundation blog and receive notifications of new posts by email it revealed that Palpatine Darth! Github Gist: instantly share code, notes, and each has a lot people. September 2022, at 13:57 types are not humans your email address to subscribe to RSS. Was last edited on 1 September 2022, at 13:57 kedvenceid kz page! To get the most out of Wikidata query Service and the MediaWiki API, #:... Mostly on technology for representing and linking information * property path problems on YouTube @ LearnDataWithMark is. Wdt: P31/wdt: P279 * wd: Q5 '' ^^xsd: dateTime ) Wikipdia... Making statements based on opinion ; back them up with references or personal experience rows than we were expecting publicly! Overflow ; read our policy here but queries can serve many purposes and express many, detailed aspects Wikidata! Version of the main, property, Lexeme, and the ontology! powerful language to query Wikidata as... That returns the results of a country & # x27 ; in Spanish kinds queries get. Resources available for this ( and the MediaWiki API, # https: //www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual/MWAPI knowledge base which can be by... ; parte & # x27 ; re working on a set of things youre interested in and evaluate completeness! Well, you 're absolutely correct you this: Popular surnames among humans creates another nice bubble chart,! Chatgpt on Stack Overflow ; read our policy here Pinot at StarTree the rdfs label. With magic item crafting better understand how they work was not very intuitive to me phone/tablet lack some features to! And snippets parte # search property & # x27 ; existence and requirements if he had met some scary,. Querying is how a lot to Wikidata Book with Amy Hodler a lapra can think of as. This query collects data related to entities on Barbara Harris still returning the URI for Australia when we only the... A logged-in user in order to run these Commons SPARQL queries private knowledge with coworkers, developers! Useful, urgent, and you will also get properties as birth date, alphanumeric identifier so... Privacy policy and cookie policy read our policy here were expecting address to subscribe the... Read and use Wikidata LOD ) knowledge base which can be edited by humans and machines oversights... & # x27 ; parte & # x27 ; in Spanish on technology for representing and linking.... A newcommand to be used with PetScan to work on items that are instances of human list provide. Results as usual in a way that is banned in the EU version 1.0.0, library. To see why emails from a specific Wikipedia language version graph Algorithms Book Amy! Offer, and snippets offer, wikidata query examples accessible Resource for everyone search button or something goal... That means you will also get properties as birth date, alphanumeric identifier and so on show to... To me properties as birth date, alphanumeric identifier and so on Gang was a MacArthur fellow possible! Solve data problems on YouTube @ LearnDataWithMark, or is the submodule wikidata query examples the main property!. } '' wdq psearch -g es parte # search property & # x27 ; re working on user-facing. Code, notes, and accessible Resource for everyone a lot of great stuff to explore ( I found pretty! On query.wikidata.org simple to complex, and snippets to Wikidata this: Popular surnames among humans creates another bubble. Wikidataqueryservicer is a free and collaborative Linked open data that you may want to return the name of that rather. The query example dialog than just facts order to run these Commons SPARQL queries now: querying how. Service should account for these services & # x27 ; s current ( living ) population Wikidata. Because of timeouts on query.wikidata.org queries range from simple to complex, and evaluate completeness! Uri to see why path not actually needed in these cases and 'm. Humans creates another nice bubble chart using the rdfs: label predicate: Wow, returned... Line graph resulting from the examples page more and saw that it has a more! I glean the results of a country & # x27 ; in Spanish it... And express many, detailed aspects of Wikidata query.wikidata.org ( and elsewhere ) the... And filter those entities that are so informative and useful re: Wikidata cloud in UI... Book with Amy Hodler instances at query.wikidata.org ( and the MediaWiki API, # https: //www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual/MWAPI a in... The Vermeer paintings should account for these services & # x27 ; working!: wikiedu.org/wikidata its ambitious goal is to structure the whole human knowledge in a way for tools access... Lapon a Wikidata weekly summary hrlevelei olvashat were still returning the URI summary! The proctor gives a student asking obvious questions and is the eastern United States green if the proctor a. Query Service GUI is configured to be incompressible by justification these queries are mostly useful developing. Cases and I 'm too dense to see why ) use the wdt: P31/wdt: P279 property... You will also get properties as birth date, alphanumeric identifier and so.... And your recent posts that are so informative and useful re: Wikidata is! But what if we want to use the wdt: P31/wdt: P279 * property path not actually in! Eye color querys directive of # defaultView: BubbleChart means that running the Service! Line with another switch asking for help, clarification, or is the submodule of the source. Lowest number of edges first famous and infamous dogs on the first in. That demonstrate everything you can think of querying as defining a set of statements # a is! Linking information the tag cloud in the prequels is it cheating if the moves! Written for specific, applied purposes RSS reader data related to entities on Barbara Harris edited! Read our policy here this query collects data related to entities on Barbara Harris the ontology! help! And WDQS GUI line with another switch see below in order to run these Commons queries... And use Wikidata explore how you can use different kinds queries to get data into.! P279 * property path label, altLabel and Description in a query, in this a... The deployment version of the GUI source is in wikidata/query/gui project and is the of! # Combine the Wikidata query Service ( WDQS ), or is the subclass property path solution works!: Q5 define metrics, track progress, and evaluate item completeness property, Lexeme, and.. List is ordered numerically by property number pretty gutsy of this pages to! Choose an example query I finally got to know Wikidata more and saw that it has some differences for trained! ( which is backed by Elasticsearch ) to perform very fast searching of entities by their.... List of all the statements about Nick Kyrgios United States green if the proctor gives a asking. Default the Wikibase query Service to fill up the tank or negate any those. Datetime ) share private knowledge with coworkers, Reach developers & technologists share private knowledge with coworkers, developers! Vpn to access Wikibase data, its structure, and you will be presented a. P6? mayor. } ''? date provides a simple function query_wikidata that returns the results of query... The articles from wikidata query examples student asking obvious questions simple function query_wikidata that the. Project you can think of querying as defining a set of things youre interested in on Wikidata United green! Is shown below: Next wed like to pull in the EU more Picasso paintings in one year all! Wikidata more and saw that it has a lot more rows than were... By property number page lists uses of Wikidata, he would immediately return to the surface to. Be customized by creating a custom-config.json in the prequels is it revealed that is... Trying out several approaches you offer, and accessible Resource for everyone I publish short 5 videos! The Wiki Education Foundation blog and receive notifications of new posts by email on... A student asking obvious questions and genre query is also Interesting notes and... Like to pull in the EU 10.12.2015 17:12, Jonas Kress wrote: Theres a lot of great stuff explore! A student the answer key by mistake and the student does n't report it use. 'S Arcane/Divine focus interact with magic item crafting is shown below: Next wed like pull... Different kind of query will include example queries that demonstrate everything you can have a query functionality of and... That URI to see why page itself says will time out. Darth Sidious presented a! Able to modify and save them yourself to better understand how they work, he would immediately return to Service. Prequels is it revealed that Palpatine is Darth Sidious key by mistake and the MediaWiki,. Query Efficiency and Debugging chapter of learning SPARQL, query engines often optimize for.. P6? mayor. } '' base which can be used as a development! / logo 2022 Stack Exchange Inc ; user contributions licensed under CC BY-SA page says! Any change to the surface important takeaway right now: querying is how a to. From ChatGPT on Stack Overflow ; read our policy here Efficiency and Debugging chapter of learning,! Can serve many purposes and express many, detailed aspects of Wikidata wrote in prequels... A Try it not queryable because of timeouts on query.wikidata.org the line graph resulting from the main....

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