sparql empty result for dbpedia-owl:influenced property

Question

I am trying to retrieve the value of the dbpedia-owl:influenced in this page eg: Andy_Warhol

The query I write is:

PREFIX rsc : http://dbpedia.org/resource
PREFIX dbpedia-owl :http://dbpedia.org/ontology

SELECT ?o WHERE {
   rsc:Andy_Warhol dbpedia-owl:infuenced ?o .
}

but it is EMPTY.

Strange is that when I have the same query for another property from the ontology type like "birthPlace", the sparql engine gives the result back:

SELECT ?o WHERE {
  rsc:Andy_Warhol dbpedia-owl:birthplace ?o .
}

which is a link to another resource: dbpedia.org/resource/Pittsburgh

I am just confused how to write this query?

Answer 1

besides several formal errors addressed in the answer of @Joshua, there is also the semantic problem that the properties you are looking for - in this case - seem to be found on the entities that were influenced .

this query might give you the desired results

PREFIX rsc: <http://dbpedia.org/resource/>
PREFIX dbpedia-owl: <http://dbpedia.org/ontology/>

SELECT ?s WHERE {
    ?s dbpedia-owl:influencedBy rsc:Andy_Warhol .
}

run query

Answer 2

There are a few issues here. One is that the SPARQL, as presented, isn't correct. I edited to make the prefix syntax legal, but the prefixes were still wrong (they didn't end with a final slash). You don't want to be querying for http://dbpedia.org/resourceAndy_Warhol after all; you want to query for http://dbpedia.org/resource/Andy_Warhol . Some standard namespaces for DBpedia are listed on their SPARQL endpoint . Using those namespaces and the SPARQL endpoint, we can ask for all the triples that have http://dbpedia.org/resource/Andy_Warhol as the subject with this query:

SELECT * WHERE {
  dbpedia:Andy_Warhol ?p ?o .
}

In the results produced there, you'll see the one using http://dbpedia.org/ontology/birthPlace (note the captial P in birthPlace ), but you won't see any triples with the predicate http://dbpedia.org/ontology/infuenced , so it makes sense that your first query has no results. Do you have some reason to suppose that there should be some results?