Question: What tourism spot in Philadelphia was established in the year 1753?
Answer(s):
answer: Independence Hall

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0dclg)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0dclg ns:travel.travel_destination.tourist_attractions ?x .
?x ns:protected_sites.protected_site.date_established "1753"^^xsd:dateTime . 
}