#altar  a raised structure on which gifts or sacrifices to a god are made
  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:  high_altar  the main altar in a church

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