Question: WHat label was nominated for the Latin grammy award of Best Tango Album and has signed the artist Jojo?
Answer(s):
answer: Mercury Records

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01wjgjb)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01wjgjb ns:music.artist.label ?x .
?x ns:award.award_nominee.award_nominations ?c .
?c ns:award.award_nomination.award ns:m.04yh4p_ . 
}