sparql

If a Wikidata resource returned by my query has no available label in the language I filtered for I obtained an empty cell. SELECT * WHERE { ?country wdt:P31 wd:Q6256. ?country rdfs:label ?country_name FILTER(LANG(?country_name) = 'jbo'). } link How to request to have a label returned in one of any of the available languages if the first language fails? Joshua Taylor First, prefer langMatches for checking language tags. This is especially important in your case, since you might want, for instance, a label in English, and langMatches(lang(?label), "en") will find a label with the tag "en", or

I'm trying to import LinkedMDB (6.1m triples) into my local version of jena-fuseki at startup: /path/to/fuseki-server --file=/path/to/linkedmdb.nt /ds and that runs for a minute, then dies with the following error: Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded at com.hp.hpl.jena.graph.Node$3.construct(Node.java:318) at com.hp.hpl.jena.graph.Node.create(Node.java:344) at com.hp.hpl.jena.graph.NodeFactory.createURI(NodeFactory.java:48) at org.apache.jena.riot.system.RiotLib.createIRIorBNode(RiotLib.java:80) at org.apache.jena.riot.system.ParserProfileBase

I have been given what I thought would be a simple task - take an existing SPARQL query and adapt the WHERE clause to restrict results to entities where a specific text field contains a specific search term. However, I am entirely new to the SPARQL language and nothing I've tried is working. It seems I need to use the text:query (rdfs:label 'word' 10) syntax, but I haven't managed to successfully integrate this into the query below. What I need is to further filter the results of the below query where the rdfs:label triple has a value containing the search term. If any of you could provide

I want to query the American Physicsts and get the list of physicists. How can I do this? The SPARQL you need would look like this .... PREFIX category: <http://dbpedia.org/resource/Category:> PREFIX dcterms: <http://purl.org/dc/terms/> SELECT * WHERE { ?s dcterms:subject category:American_physicists . } see results here If you want the list with some extra predicates you need to join more triple patterns using the variable ?s . For instance, to retrieve the birthdate for each physicist ... PREFIX category: <http://dbpedia.org/resource/Category:> PREFIX dcterms: <http://purl.org/dc/terms/>

My question is similar to what was asked on this thread Is it possible to combine those 2 SPARQL INSERT into one? I want to have multiple INSERT WHERE statements in a query, but for different subjects. I will like to test a particular value ("testValueN") and if present would like to insert a new triple for that subject. An example of it would be, PREFIX Sensor: <http://example.com/Equipment.owl#> { INSERT { ?subject1 Sensor:test2 'newValue1' . } WHERE { ?subject1 Sensor:test1 'testValue1' . } }; { INSERT { ?subject2 Sensor:test2 'newValue2' . } WHERE { ?subject2 Sensor:test1 'testValue2' . }

I have this RDF <?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:com="http://www.example.com/com#"> <rdf:Description rdf:about="http://www.example.com/com#1"> <com:cities> <rdf:Bag> <rdf:li>A</rdf:li> <rdf:li>B</rdf:li> <rdf:li>D</rdf:li> </rdf:Bag> </com:cities> <com:name>1</com:name> </rdf:Description> <rdf:Description rdf:about="http://www.example.com/com#2"> <com:cities> <rdf:Bag> <rdf:li>C</rdf:li> <rdf:li>B</rdf:li> </rdf:Bag> </com:cities> <com:name>2</com:name> </rdf:Description> <rdf:Description rdf:about="http://www.example

I've to get all the instances of a class C and subclasses (direct or indirect) of C, in SPARQL. I can get all the direct subclasses of C in this way: SELECT ?entity WHERE { ?subclass rdfs:subClassOf :C . ?entity rdf:type ?subclass . } But I can't get the instances of an indirect subclass and neither any instance of C. As I know (I've pre-calculated them) all the subclasses (direct and indirect of C), and I can build a dynamic query, is it possible build a query like the following one? SELECT ?entity WHERE { ?entity rdf:type in <list>. } Thanks to everyone. EDIT: I've just solved it, even if in

I have displayed the result of a SPARQL query in a HTML page using Json, my question is when a certain value is entered and the query does not display a result it should display a alert box. My code is below: HTML <table id="results"> </table> Query script var query = [ "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>", "PREFIX yago: <http://dbpedia.org/class/yago/>", "PREFIX type: <http://dbpedia.org/class/yago/>", "PREFIX prop: <http://dbpedia.org/property/>", "SELECT ?name ?runtime", "WHERE {", "?film rdf:type dbo:Film.", "?film dbp:name ?name.", "?film dbo:director dbr:Peter_Jackson."