Question: How many different genres led to other genres where drums are important?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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:instruments <http://dbpedia.org/resource/Drum_kit> . ?x onto:stylisticOrigin ?uri . ?uri rdf:type onto:MusicGenre}