Question: For how many things are americans famous for?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:placeOfBirth <http://dbpedia.org/resource/United_States> . ?x onto:knownFor ?uri . }