Questions tagged [wikidata]
Wikidata is a project of the Wikimedia foundation related to open data
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In Wikidata, can X be a subclass of Y if Y is a subclass of X?
I wrote a program to recursively identify all the subclasses of human and noticed that it got stuck in an infinite loop: human fetus and unborn child are subclasses of each other.
When I hear "...
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Query Japanese verbs and their different conjugations
I am pretty new to SPARQL, and I am trying to query Japanese verbs and their different conjugations.
I am not getting any results for the optional ?pastTense, and I can not grasp why.
PREFIX wikibase: ...
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Wikidata SPARQL query: adding qualifiers?
I have put together this SparQL query that basically get's all the members of UK cabinets.
SELECT ?personLabel ?positionLabel ?parliamentLabel ?startDate ?endDate
WHERE
{
?person wdt:P106 wd:Q82955; ...
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Public database with celebrity names?
Essentially I have a list of customer names (first, last), and we want to know whether or not any of these have celebrity status, so looking to cross-reference my list with an external database.
Again,...
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Get Wikidata Dump with countries and attributes
I'm trying to write a SPARQL-query for wikidata, returning all European countries with their most recent properties (population, area, average income, age of retirement and human development index). ...
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Trying to get a qualifier to work, not sure what's wrong
I'm trying to get total assets for companies within the US, but I only want assets from the most recent year available in Wikidata. I'm using P2403 to get total assets and I'm trying to use the ...
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Wikidata COUNT(*) query times out
I have a straightforward query that counts how many humans have an English Wikipedia page.
prefix schema: <http://schema.org/>
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wd: <...
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Why some items on Wikidata have no corresponding Wikipedia entry?
I get stuck by this Wikidata item: 9., and wonder why there is no corresponding Wikipedia entry?
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getting the latest data about covid-19 pandemic per country with a Wikidata SPARQL query
I'm trying to extract some of the latest data about covid-19 pandemic statistics (number of cases, recoveries, point in time) per country from Wikidata using this SPARQL query:
SELECT DISTINCT ?...
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Why are some entries so long and strange on Wikidata?
I wonder why Wikidata includes/filters in this kind of entries:
Foundations of Astrophysics Barbara Ryden Bradley M. Peterson. 596 pp. Addison-Wesley, San Francisco, 2009. Price: $137.33 (hardcover). ...
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The Chinese English parallel corpus from Wikidata?
I have these two corpora: 1) wikidata alias; 2) wikidata labels.
What confused me is that 数学常数 and Mathematical constant's QIDs are respectively Q866140 and Q186509, even though they are linked to ...
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What is the difference between sameAs and alias in Wikidata?
From the descriptions of sameAs and alias I don't know how the two relate to each other, and it also provides the redirects. And aliases also appear in properties.
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How can I get the category of a term by its QID?
I obtained entities(and their QIDs) and the category data from Wikidata, but cannot connect the two.
Here is what an entity entry is like:
<http://wikidata.dbpedia.org/resource/Q100000001> <...
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Wikidata dump in another language
I am aware that you can download a Wikidata dump file from here
But is it possible to only include results for a specific language?I have in the past worked with a json dump file and used python to ...
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Fail to search a wikidata item through SPARQL
I tried to search and get the ID of a item with a certain label: Teodor Bogdanov. I can search this name successfully through wikidata website. However, I failed to do so by searching through SPARQL. ...
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What is the best way to convert a taxonomy from wikipedia into a JSON-like object?
I'm trying to use the Wikipedia academic fields as a JSON object in one of my projects. I couldn't find it in a useable or convertible format so I am looking into the best approach to obtain it.
I ...
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Need top 1000 city names in Ukraine in English, Ukrainian, and Russian
I'm working on a project to track Russian troop movements in the Ukraine with a large group of people. I'm tasked with internationalizing the data.
We need a list of the top 1,000 cities in Ukraine ...
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Find random 10 people Wikidata
Using Sparql I can find person on Wikdata by his name:
SELECT distinct (SAMPLE(?image)as ?image) ?item ?itemLabel ?itemDescription
(SAMPLE(?DR) as ?DR)(SAMPLE(?RIP) as ?RIP)(SAMPLE(?...
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WikiData: filter mwapi results
I am trying to write a sparql query that can retrieve all categories/items from a root and filter down only the ones that are of "human" type.
Using the query below, I can retrieve all ...
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Wikidata reconciliation with OpenRefine—get only those subjects with English as the language flag
Leptospermum scoparium (Q1520028) has 8 common name (P1843) entries.
I have data in OpenRefine reconciled to this object:
How can I get only those P1843 entries that are in English? The ...
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How to get person name and other attributes from Wikidata Sparql (resolving entities)?
I have this Node.js sparql fetcher from Wikidata:
next()
async function next(offset = 0) {
const sparql = `
SELECT ?person ?pic ?givenName ?familyName ?placeOfBirth
WHERE {
?person wdt:P31 ...
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Wikimedia: Delta-Dumps or Timestamp of Last Change
I am looking for a list of all the entries of https://de.wiktionary.org (German Wiktionary, but I think this works for all Wikimedia the same way) that have had any changes since the last dump. Is ...
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What is the best way to create private wikidata items
I am looking for a way to create new private wikidata items to be integrated with the existing public wikidata.
Example:
Fluffy (Qxxxx) is a (P31) red (Q3142) rabbit (Q9394) stuffed toy (Q682582) .
...
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Explanation for behaviour of FILTER in WDQS
I try to write a simple SPARQL query using WDQS to show some information about a city. My first attempt was to filter using a check for equality, like:
SELECT ?city ?cityLabel
WHERE
{
?city wdt:P31/...
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SPARQL query to find invalid date in Wikidata
The following wikidata query lists the teams Cristiano Ronaldo played for including start and end dates.
SELECT ?playerLabel ?teamLabel ?start ?end WHERE {
VALUES ?player {
wd:Q11571
}
?...
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Is it possible to query Wikidata to get a list of things by item index?
Say, for example, that I wanted to know what the first 100 items are on WikiData (which I do,) without searching in WikiData Q1, Q2, Q3 and so on. Is there a way to write a SPARQL query to find all ...
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Dataset for plant identification
I'm looking for a plant identification dataset (to train a plant identification system) that is free or not too expensive to use and has plant images, specifically garden plants. Just wondering if ...
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DOID , SYMP Ontology Sparql Queries
I need to extract the list of diseases, categories, bodyparts and symptoms.
I've found several ontologies for that datasets.
Disease ontology, symptom ontology, Bioportal and Wikipedia. But I don't ...
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How to retrieve infos about creators with sparql in wikidata
I'm trying to retrieve infos about birth and death corresponding to paintors with this query, however I have an empty result if I uncomment birth and death infos.
# added before 2016-10
# Recherche de ...
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How can I override this «Query is malformed: Bad aggregate» error message?
I'm working with a Wikidata query:
SELECT DISTINCT ?protected_area ?protected_areaLabel ?coordinate_location ?territorialEntity ?territorialEntityLabel (SAMPLE(?instance_of) AS ?instance_of) ?...
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SPARQL to get Wikidata items that have no P18 image but have a Commons image depicting them?
Many Commons images depict Wikidata concepts.
How to find these concepts, in particular those that do not have an image (P18) property?
The request should output the URIs of both the Wikidata item ...
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Whole word entity search on Wikidata
Wikidata wbsearchentities service seems perform prefix-based matching, e.g. searching for novel matches as expected:
novel : narrative text, normally of a substantial length and in the form of prose ...
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Torrent for Wikidata dump
I'm looking for Wikipedia (enwiki-latest-pages-articles-multistream.xml.bz2) and a Wikidata (latest-all.json.bz2 ) dumps. The files are quite large (the latter has ~47GB) and my internet connection ...
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Filtering Wikidata Search
Wikidata today is not only an ontology but also a catalog of publications: scientific articles, formal documents (law), etc. are registered, millions of Wikidata-items. So, when using Wikidata's ...
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Airline Distribution system Data
Appreciate it if anyone can suggest an online data source to capture the below information.
Airline | Country | number of Fleet | Number of Destinations | Airline PSS (Passenger Service System)
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How do I extract certain articles from Arabic Wiki Dumps?
I need to collect all articles that are about countries and continents in Arabic from Wikipedia. I was wondering how do I find these articles if I downloaded the latest wiki dump?
New to the field. ...
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Does Wikidata offer inferencing/reasoning?
I would like to use RDFS level inferencing in some queries posed in the Wikidata Query Service which uses SPARQL. Does it support inferencing/reasoning? If so, in what kind? For example, is it Forward ...
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Looking for foot pressure database collected from pressure sensors
I am working on a project where I need foot pressure data that a person put on his foot while walking, running, or doing any other practice. I searched a lot in the search engines and I couldn't find ...
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Query wikipedia links
I'm using the following query to receive label and description of all Wikidata-entries with geo-location in a geo-bounding box:
SELECT DISTINCT ?place ?placeLabel ?placeDescription ?location WHERE
{
...
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Find all Wikidata items whose image (P18) URL contains a certain word
I am trying to find all Wikidata items whose P18 property is an URL that has the word "Montage" anywhere in its filename.
Example:
I managed to find items by their complete P18 filename:
SELECT ?...
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SPARQL get all the data before it reaches timeout
I am trying to get all the city names of all countries in the world using this below query. Whenever I execute this below query it returns this message "Query timeout limit reached".
Is there any ...
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Find most-depicted Wikidata items that have no image
Wikimedia Commons has a new feature where a picture can have metadata saying it depicts a given Wikidata item.
For instance, https://commons.wikimedia.org/wiki/File:Grandpark_Plaza.jpg depicts https:/...
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How come there are missing entities in this SPARQL query?
I was interested in listing all books,
so I wrote:
SELECT ?book ?url WHERE {
?book wdt:P31 wd:Q571 .
OPTIONAL {
?url schema:about ?book .
?url schema:inLanguage "en" .
?url schema:...
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How to find the wikidata ID of a DBpedia concept?
I have a set of DBpedia concepts and would like to get the corresponding wikidata IDs of them.
For example, consider word2vec. The wikidata ID of word2vec is wd:Q22673982.
Currently, I have the ...
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SPARQL - Filter wikidata identifiers
Query below gives me all programming languages entities, with their statements.
Problem is that I don't need identifiers now, but these IDs might become necessary. I was just gonna model database ...
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Wikidata SPARQL - get company entities and the location of their headquarters
I'm having trouble extracting location attributes of company HQ's.
My query: finds all companies or sub-classes, and returns some basic properties such as ISIN and URL, and the Headquarter location. ...
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SPARQL query to get capacity of event venues from Wikidata
I am trying to query Wikidata to find out the capacities of all event venues in specific geographic regions (US urban centers). They have this service for querying: Wikidata Query Service
The answer ...
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How to distinguish between human and animal bones in Wikidata?
The two topics
https://www.wikidata.org/wiki/Q16343 (Clavicle)
https://www.wikidata.org/wiki/Q835986 (Baculum, Penis bone)
are both instances of Q265868 (Bone). However, the clavicle is a human (...
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How to use wikidata property paths?
Given a term/concept, I want to decide if it belongs to computer science. For that, I am checking if the concept has a property path to computer science node. In other words, I am checking whether ...
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Wikidata SPARQL How to speed up this query?
I have come to this query, which retrieves wikipedia and wikidata info from a wikipedia title:
SELECT ?wikipediaId ?wikipediaTitle ?wikidataId ?desc ?imageUrl
(GROUP_CONCAT(?instanceOfS; SEPARATOR=";"...
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