#railway_system__railwaysystem__railway__railroad_line__railway_line__railwayline  line that is the commercial organization responsible for operating a railway system
  supertype:  line.common_carrier  a commercial organization serving as a common carrier
  subtype:  cable_railway__cablerailway__funicular__funicular_railway__funicularrailway  a railway up the side of a mountain pulled by a moving cable and having counterbalancing ascending and descending cars
  subtype:  cog_railway__cograilway__rack_railway  railway for steep mountains; a cogwheel on the locomotive engages cogs on a center rail to provide traction
  subtype:  metro__subway__tube__underground  electric underground railway
  subtype:  monorail  a railway having a single track
  subtype:  rail  short for railway; "he traveled by rail";1 "he was concerned with rail safety"
  subtype:  scenic_railway  small railway in an amusement park

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