Question: What country uses the Barbadian Dollar and is the home of popular singer 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.currency_used ns:m.05hy7p . 
}