Question: What football teams did Emmitt Smith play for that its arena stadium is University of Phoenix Stadium?
Answer(s):
answer: Arizona Cardinals

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01480y)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01480y ns:sports.pro_athlete.teams ?y .
?y ns:sports.sports_team_roster.team ?x .
?x ns:sports.sports_team.arena_stadium ns:m.080ls4 . 
}