Question: What San Diego amusement park opened July 4, 1925?
Answer(s):
answer: Belmont Park

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.071vr)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.071vr ns:travel.travel_destination.tourist_attractions ?x .
?x ns:amusement_parks.park.opened "1925-07-04"^^xsd:dateTime . 
}