Question: What are Jerry Bock's musicals based upon?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/music> <http://dbpedia.org/resource/Jerry_Bock> . ?x <http://dbpedia.org/ontology/basedOn> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Musical>}