Question: What south America Country speaking Italian in home to the capital city of Buenos Aires?
Answer(s):
answer: Argentina

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.02bjrlw)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.02bjrlw ns:language.human_language.countries_spoken_in ?x .
?x ns:location.country.capital ns:m.01ly5m . 
}