Question: What character did Matt Stone and Frank Morgan play?
Answer(s):
answer: Wizard of Oz

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01_x6d)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01_x6d ns:film.actor.film ?y .
?y ns:film.performance.character ?x .
?x ns:film.film_character.portrayed_in_films ?c .
?c ns:film.performance.actor ns:m.012dpb . 
}