Question: Where is the location of the war South Vietnam a combatant in?
Answer(s):
answer: Vietnam
answer: Cambodia
answer: Laos
answer: Southeast Asia
answer: South Vietnam
answer: North Vietnam

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:military.military_conflict.commanders ?k .
?k ns:military.military_command.military_combatant ns:m.0g8bw . 
?c ns:time.event.locations ?x .
}