machine_question: where do the chicago cubs play and is the sports facility where Chicago Bears play
question: What sports stadium have both the Chicago Cubs and Chicago Bears played in?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ns:m.01yjl)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ns:m.01yjl ns:sports.sports_team.arena_stadium ?x .
  ?x ns:sports.sports_facility.home_venue_for ?c .
  ?c ns:sports.team_venue_relationship.team ns:m.01y3v . 
  }
webqsp_question: where do the chicago cubs play