#stadium__bowl__arena  a large structure for open-air sports or entertainments
  supertype:  #physical_structure__structure__construction  a thing constructed; a complex construction or entity; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"
  part:  #field_house  #stands  #standing_room  #tiered_seats  #playing_field
  subtype:  #coliseum__amphitheater__amphitheatre  an oval large stadium with tiers of seats; an arena in which contests and spectacles are held
     subtype:  #Colosseum  amphitheater in Rome built about AD 75 or 80
  subtype:  #bullring  a stadium where bullfights take place
  subtype:  #circus.stadium  (ancient Rome) an open-air stadium for chariot races and gladiatorial games
  subtype:  #domed_stadium__domedstadium__dome__covered_stadium__coveredstadium  a stadium that has a roof
  subtype:  #football_stadium  a stadium where football games are held
  subtype:  #hippodrome  a stadium for horse shows or horse races

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