Question: What vice president was the subject of the movie Frost/Nixon?
Answer(s):
answer: Spiro Agnew
answer: Gerald Ford

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_subject.films ns:m.02vqsll . 
?c ns:government.us_president.vice_president ?x .
}