#demarcation__demarcation_line__demarcationline  the boundary of a specific area
  supertype:  #bounds__boundary  the line or plane indicating the limit or extent of something
  subtype:  #city_limit__city_limits  the limits of the area occupied by a city or town
  subtype:  #upper_limit  the limit on the upper (or northernmost) side of something
  subtype:  #lower_limit__lowerlimit  the limit on the lower (or southernmost) side of something
  subtype:  #three-mile_limit  the limit of a nation's territorial waters

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