Question: For what movie in which Diana Ross played, was Don Bluth a crew member?
Answer(s):
answer: The Land Before Time

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01wrcxr)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01wrcxr ns:film.actor.film ?y .
?y ns:film.performance.film ?x .
?x ns:film.film.other_crew ?c .
?c ns:film.film_crew_gig.crewmember ns:m.02vp1y . 
}