Question: What hotel in San Francisco opened on October 2, 1875?
Answer(s):
answer: Palace Hotel, San Francisco

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0d6lp)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0d6lp ns:travel.travel_destination.accommodation ?x .
?x ns:architecture.structure.opened "1875-10-02"^^xsd:dateTime . 
}