Question: What time zone is Tulsa International Airport in?
Answer(s):
answer: Central Time Zone

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0488g)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0488g ns:location.location.time_zones ?x .
?x ns:time.time_zone.locations_in_this_time_zone ?c .
?c ns:location.location.nearby_airports ns:m.01qgx3 . 
}