Question: Who were the brothers and sisters of the artist who had the This is It Tour?
Answer(s):
answer: La Toya Jackson
answer: Jackie Jackson
answer: Tito Jackson
answer: Jermaine Jackson
answer: Marlon Jackson
answer: Rebbie Jackson
answer: Randy Jackson
answer: Joh'Vonnie Jackson
answer: Janet Jackson
answer: Brandon Jackson

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:music.artist.concert_tours ns:m.05y_zz5 . 
?c ns:people.person.sibling_s ?y .
?y ns:people.sibling_relationship.sibling ?x .
}