Question: Who was the actor that played Obi Wan Kenobi in a film that Tony Vice was a crew member of?
Answer(s):
answer: Ewan McGregor

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:film.film.other_crew ?k .
?k ns:film.film_crew_gig.crewmember ns:m.0bvd5_m . 
?c ns:film.film.starring ?y .
?y ns:film.performance.actor ?x .
?y ns:film.performance.character ns:m.0fkm7 .
}