Question: What time zone is the place that has the legislative session of the 6th Oklahoma Legislature?
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:government.governmental_jurisdiction.governing_officials ?k .
?k ns:government.government_position_held.legislative_sessions ns:m.0w34d3z . 
?c ns:location.location.time_zones ?x .
}