Question: What country is the main character of the film Christopher Columbus: The Discovery from?
Answer(s):
answer: Republic of Genoa

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_subject.films ns:m.0dj0m5 . 
?c ns:people.person.nationality ?x .
}