Question: In the city that circulated the Oklahoma gazette newspaper, what Time zone is used?
Answer(s):
answer: Central Time Zone

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:periodicals.newspaper_circulation_area.newspapers ns:m.0dnff5 . 
?c ns:location.location.time_zones ?x .
}