Question: What airport is closest to the the location where the film "Perfume: The Story of a Murderer" takes place?
Answer(s):
answer: Barcelona–El Prat Airport

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.0h14ln . 
?c ns:location.location.nearby_airports ?x .
}