Question: What airport is there at the location of the Balvanera neighborhood?
Answer(s):
answer: Aeroparque Jorge Newbery
answer: Ministro Pistarini International Airport
answer: Don Torcuato 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:location.place_with_neighborhoods.neighborhoods ns:m.03z8bh . 
?c ns:location.location.nearby_airports ?x .
}