Question: Which band produced the album Aida?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/album> <http://dbpedia.org/resource/Aida_(musical)> . ?x <http://dbpedia.org/ontology/musicalArtist> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/MusicalWork>}
Answer: [Elton John] produced the album Aida.