Question: What are the names of the actors the played the children of Mayor Ghoul?
Answer(s):
answer: Paris-Michael Katherine Jackson
answer: Michael Joseph Jackson, Jr.
answer: Prince Michael Jackson II

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.actor.film ?k .
?k ns:film.performance.character ns:m.0y9dxk6 . 
?c ns:people.person.children ?x .
}