Question: What currency is used in the location where the movie "The Proud and Profane" took place?
Answer(s):
answer: United States Dollar

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:film.film_location.featured_in_films ns:m.0kv15j . 
?c ns:location.country.currency_used ?x .
}