Question: In the state that held the Houston mayoral election in 2009, which airport is closest to downtown?
Answer(s):
answer: George Bush Intercontinental Airport
answer: Ellington Airport
answer: William P. Hobby Airport
answer: West Houston Airport
answer: Pearland Regional Airport
answer: Houston Southwest Airport
answer: Lone Star Executive Airport
answer: Weiser Air Park
answer: Westheimer Air Park
answer: Dan Jones International Airport
answer: Houston Fort Bend Airport
answer: Houston Executive Airport
answer: Houston Gulf Airport
answer: Sugar Land Regional Airport
answer: David Wayne Hooks Memorial Airport

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:government.political_district.elections ns:m.058f8jt . 
?c ns:location.location.nearby_airports ?x .
}