In this simple sparql query I get a list of subjects whose object is 42 SELECT ?v WHERE { ?v ?p 42 } If I add ?p as开发者_StackOverflow中文版 a variable
I cannot understand how can I query DBpedia using Jen开发者_StackOverflow社区a. In the tutorials like here(Listing 4) model is initialized as follows:
I\'m making a SPARQL query against the Sesame store in localhost, using SPARQLWrapper: s开发者_运维百科parql = SPARQLWrapper(\'http://localhost:8080/openrdf-sesame/repositories/rep/statements\')
This is a terribly beginner series of questions, but after reading through a good 30 SPARQL tutorials I can\'t seem to wrap my head around what SPARQL is or how to begin using it.
I am trying to write a SPARQL query which should give me all foaf:Agents which aren\'t foaf:Persons. I can\'t see a way to apply 开发者_如何学Cthis OPTIONAL/BOUND construct to this problem, because a
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