#floor__flooring  the inside lower horizontal surface (as of a room or hallway); "they needed rugs to cover the bare floors"
  supertype:  horizontal_surface__level  a flat surface at right angles to a plumb line; "park the car on the level"
  subtype:  bell_deck  dance_floor  floorboard  parquet_floor  truck_bed
  part of:  hallway__hall  an interior passage or corridor onto which rooms open; "the elevators were at the end of the hall"
  part of:  room  an area within a building enclosed by walls and floor and ceiling; "the rooms were very small but they had a nice view"
     part of:  edifice__building  a structure that has a roof and walls and stands more or less permanently in one place; "there was a three-story building on the corner"; "it was an imposing edifice"

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