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