Question: Who are the brothers of the actor who played Warren Palmer?
Answer(s):
answer: Bob Williams
answer: Don Williams
answer: Dick Williams

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.0hp5v2g . 
?c ns:people.person.sibling_s ?y .
?y ns:people.sibling_relationship.sibling ?x .
?x ns:people.person.gender ns:m.05zppz .
}