Question: What is the language spoken in the country that uses Peruvian sol as currency?
Answer(s):
answer: Aymara language
answer: Omagua dialect
answer: Spanish Language
answer: Ayacucho Quechua
answer: Puquina Language
answer: Waorani Language

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:location.country.currency_formerly_used ns:m.0344xy . 
?c ns:location.country.languages_spoken ?x .
}