#coliseum__amphitheater__amphitheatre  an oval large stadium with tiers of seats; an arena in which contests and spectacles are held
  supertype:  #stadium__bowl__arena  a large structure for open-air sports or entertainments
  subtype:  #Colosseum  amphitheater in Rome built about AD 75 or 80
  part:  #vomitory  an entrance to an amphitheater or stadium

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