Question: Who are some cofounders of record labels with Frank Rogers?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/foundedBy> <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>}