Question: What actor played Harley Quinn and was also in the movie "Dorothy and the Witches of Oz"?
Answer(s):
answer: Mia Sara

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01t93k)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01t93k ns:tv.tv_character.appeared_in_tv_program ?y .
?y ns:tv.regular_tv_appearance.actor ?x .
?x ns:film.actor.film ?c .
?c ns:film.performance.film ns:m.010qqpzj . 
}