#opening.space__gap  an open or empty space in or between things; "there was a small opening between the trees"; "the explosion made a gap in the wall"
  supertype:  #space.amorphous_shape  an empty area (usually bounded in some way between things); "the architect left space in front of the building"; "they stopped at an open space in the jungle"; "the space between his teeth"
  subtype:  #Ranvier's_nodes  #foramen  #breach.opening  #chasm  #scissure  #hole.opening  #mouth-like_space_opening  #rift  #rip  #window.opening
  part of:  #Earth's_surface__surface  the outermost level of the land or sea; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water"
     part of:  #lithosphere__geosphere  the solid part of the earth
        part of:  #Earth.terrestrial_planet__earth__globe  the 3rd planet from the sun; the planet on which we live; "the Earth moves around the sun"; "he sailed around the world"

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