Question: Where was the Vietnam War located where the population was greater than 53,700,000?
Answer(s):
answer: Vietnam

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.07_nf)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.07_nf ns:time.event.locations ?x .
?x ns:topic_server.population_number ?num .
FILTER (xsd:integer(?num) > 53700000) . 
}