#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

No statement uses or specializes coliseum; click here to add one.