Question: Who is the football coach of the sports team that plays at the University of Phoenix Stadium?
Answer(s):
answer: Bruce Arians

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:sports.sports_team.arena_stadium ns:m.080ls4 . 
?c ns:american_football.football_team.current_head_coach ?x .
}