Question: What fun tourist attraction in Philadelphia is located at the corners of 17th St. and Montgomery Ave?
Answer(s):
answer: Wagner Free Institute of Science

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:location.location.street_address ?c .
?c ns:location.mailing_address.street_address "17th St. and Montgomery Ave."@en . 
}