Question: Which county is the neighborhood Old Town, San Diego in?
Answer(s):
answer: San Diego County

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:location.place_with_neighborhoods.neighborhoods ns:m.09rwmc4 . 
?c ns:location.hud_county_place.county ?x .
}