#apse__apsis__apsi  a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the the altar
  supertype:  #recess__niche  an enclosure that is set back or indented
  subtype:  #tribune  the apse of a Christian church that contains the bishop's throne
  part of:  #church_building__church  a place for public (especially Christian) worship; "the church was empty"

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