Question: The WikiSym 2001 event took place at the google headquarters, where is it located?
Answer(s):
answer: Mountain View

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.03bby1)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.03bby1 ns:location.location.containedby ?x .
?x ns:location.location.events ns:m.0n550sk . 
}