Question: What airport in the Central Time Zone is close to downtown Houston?
Answer(s):
answer: Sugar Land Regional Airport

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.03l2n)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.03l2n ns:location.location.nearby_airports ?x .
?x ns:location.location.time_zones ns:m.02fqwt . 
}