SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/genre> <http://dbpedia.org/resource/Progressive_rock> . ?x <http://dbpedia.org/ontology/recordLabel> ?uri . }
How many labels sign up progressive rock artists?
SELECT DISTINCT COUNT ( ?j ) WHERE { ?h property:record_label ?j . . ?h property:genre resource:Progressive_rock }
6482
There are [6482] labels signed up with progressive rock artists.
There are [6482] labels that are signed by progressive rock artists.