Question: Sports team owner Rocky Wirtz has who as his team's head coach?
Answer(s):
answer: Joel Quenneville

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.professional_sports_team.owner_s ns:m.03cb8z2 . 
?c ns:ice_hockey.hockey_team.coach ?x .
}