Question: What position does Vernon Davis play?
Answer(s):
answer: Tight end

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:common.topic.image ns:m.09hrs59 . 
?c ns:american_football.football_player.position_s ?x .
}