Question: What band that had a concert tour named In Rock World Tour did Joe Satriani play in?
Answer(s):
answer: Deep Purple

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0j6cj)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0j6cj ns:music.group_member.membership ?y .
?y ns:music.group_membership.group ?x .
?x ns:music.artist.concert_tours ns:m.063zr7_ . 
}