Question: Who composed songs in the Mr Tambourine Man album?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/album> <http://dbpedia.org/resource/Mr._Tambourine_Man_(album)> . ?x <http://dbpedia.org/ontology/composer> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Song>}