Question: Who is the mother of the artist who went on Last Girl on Earth tour?
Answer(s):
answer: Monica Braithwaite

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.09ghb6b . 
?c ns:people.person.parents ?x .
?x ns:people.person.gender ns:m.02zsn .
}