Question: Which country uses the calling code "1" and was the birthplace of Rihanna?
Answer(s):
answer: Barbados

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.06mt91)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.06mt91 ns:music.artist.origin ?x .
?x ns:location.country.calling_code "1" . 
}