Question: What point of interest is at 409 E. 5th S. in Austin?
Answer(s):
answer: William Sidney Porter House

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0vzm)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0vzm ns:travel.travel_destination.tourist_attractions ?x .
?x ns:location.location.street_address ?c .
?c ns:location.mailing_address.street_address "409 E. 5th S."@en . 
}