Question: What is there to see in Barcelona that's at an elevation of 512.0?
Answer(s):
answer: Tibidabo

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01f62)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01f62 ns:travel.travel_destination.tourist_attractions ?x .
?x ns:geography.mountain.elevation "512.0" . 
}