Question: What event of Nagasaki happened before December 14, 2014?
Answer(s):
answer: Atomic bombings of Hiroshima and Nagasaki

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.05gqf)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.05gqf ns:location.location.events ?x .
?x ns:time.event.end_date ?num .
FILTER (?num < "2014-12-14"^^xsd:dateTime) . 
}