Question: What structure, opened after November 21, 1959, can you see in Phoenix, Arizona?
Answer(s):
answer: Mesa Arts Center

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0d35y)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0d35y ns:travel.travel_destination.tourist_attractions ?x .
?x ns:architecture.structure.opened ?num .
FILTER (?num > "1959-11-21"^^xsd:dateTime) . 
}