Question: Name the founders of the record labels whose one of the founders is Frank Rogers?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/founder> <http://dbpedia.org/resource/Frank_Rogers_(record_producer)> . ?x <http://dbpedia.org/property/founder> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/RecordLabel>}