Question: What is the birthplace of the performer who headlined the Pink Friday Tour concert tour?
Answer(s):
answer: Saint James, Trinidad and Tobago

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.0j7m7wq . 
?c ns:people.person.place_of_birth ?x .
}