Question: What are the movies whose music is composed by Vangelis?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/musicComposer> <http://dbpedia.org/resource/Vangelis>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Film>}