machine_question: what is the name of the the team won the 2009 AFC Championship Game championship head coach
question: Who is the head coach of the team that won 2009 AFC Championship Game?
sparql: 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.championships ns:m.0_gt_lv . 
  ?c ns:american_football.football_team.current_head_coach ?x .
  }
  
webqsp_question: what is the name of the pittsburgh steelers head coach