#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"
  subtype:  #coliseum  #bullring  #circus.stadium  #domed_stadium  #football_stadium  #hippodrome
  part:  #field_house  an athletic facility where athletes prepare for sport
  part:  #stands  tiered seats consisting of a structure (often made of wood) where people can sit to watch an event (game or parade)
  part:  #standing_room  room for spectators to stand only
  part:  #tiered_seats  seating that is arranged in sloping tiers so that spectators in the back can see over the heads of those in front
  part:  #playing_field__playingfield__athletic_field__playing_area__playingarea__field  a piece of land prepared for playing a game; "the home crowd cheered when Princeton took the field"
     part:  #midfield  the middle part of a playing field (as in football or lacrosse)

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