Question: Miguel de Cervantes wrote the musical extended from which book?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:author <http://dbpedia.org/resource/Miguel_de_Cervantes> . ?x onto:basedOn ?uri . ?x rdf:type onto:Musical}