sparql

following freebase MQL finds 5 artists and 50 albums for each artists. [{ "type" : "/music/artist", "name":null, "album" : [{ "name" : null, "count":null, "limit":50 }], "limit":5 }] first try - without a subquery I can write SPARQL like this: SELECT ?artist ?album WHERE { ?artist :type :/music/artist . ?artist :album ?album } LIMIT n but, I don't know how many n should be specified because SPARQL has no hierarchy as far as I know. second try - with a sub-query (not sure this works correctly) Following sub-query looks like working. SELECT ?artist ?album WHERE { ?artist :album ?album . { SELECT

How can I get the labels in English or any other language in Wikidata by ID using SPARQL endpoint? Suppose wd:Q146190 is your wikidata entity ID get the label in a specific language of your specific entity ID: PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX wd: <http://www.wikidata.org/entity/> SELECT * WHERE { wd:Q146190 rdfs:label ?label . FILTER (langMatches( lang(?label), "EN" ) ) } LIMIT 1 live example in english live example in german get all the labels in any language of your specific entity ID: SELECT * WHERE { wd:Q146190 rdfs:label ?label } here the link to the live try

I have a list with movie titles and want to look these up in DBpedia for meta information like "director". But I have trouble to identify the correct movie with SPARQL, because the titles sometimes don't exactly match. How can I get the best match for a movie title from DBpedia using SPARQL? Some problematic examples: My List: "Die Hard: with a Vengeance" vs. DBpedia: "Die Hard with a Vengeance" My List: "Hachi" vs. DBpedia: "Hachi: A Dog's Tale" My current approach is to query the DBpedia endpoint for all movies and then filter by checking for single tokens (without punctuations), order by

I've been reading about SPARQL and RDF and please correct me if my reasoning about these technologies is wrong here. Assuming that we have a local SPARQL database called LOCAL.. and url to remote RDF file called URL_RDF. Can I write a script lets say in PHP which will do a SPARQL query like this ? Pseudo code. SELECT * FROM LOCAL,URL_RDF WHERE LOCAL.id=URL_RDF.id In other words can I combine sources within SPARQL query like this (remote file + local db) ? You can do this using the federation features in SPARQL 1.1. These are described at http://www.w3.org/TR/sparql11-federated-query , but to

I'm struggling with the execution of a SPARQL query in Jena, with a resulting behaviour that I don't understand... I'm trying to query the Esco ontology ( https://ec.europa.eu/esco/download ), and I'm using TDB to load the ontology and create the model (sorry if the terms I use are not accurate, I'm not very experienced). My goal is to find a job position uri in the ontology that matches with the text I have previously extracted: ex: extracted term : " acuponcteur " -> label in ontology: "Acuponcteur"@fr -> uri: < http://ec.europa.eu/esco/occupation/14918 > What I call the "weird behaviour" is

I am pretty new to SPARQL and RDF and I was wondering what exactly does the below mean in SPARQL? [] vc:n ?vcard . The complete query is PREFIX vc: <http://www.w3.org/2006/vcard/ns#> SELECT ?given ?family WHERE{ [] vc:n ?vcard . OPTIONAL {?vcard vc:given-name ?given .} OPTIONAL {?vcard vc:family-name ?family .} } Joshua Taylor This is cannibalized from my answer to What are brackets in SPARQL and why is the linked movie database limited to 2500 records? , of which this question may be a duplicate, although it's a bit more broad. (It asks two questions, whereas this asks just one.) The answer

Maybe someone could give me a hint. Is it possible to measure the distance between 2 concepts/classes that belong to the same ontology? For example, let's suppose I have an ontology with the Astronomy class and the Telescope class. There is a link between both, but it is not a direct link. Astronomy has a parent class called Science, and Telescope has a parent class called Optical Instrument which belongs to its parent called Instrumentation, that is related to a class called Empirical Science that finally belongs to a class called Science. So there is an indirect link between Telescope and