#railroad_track__railroad__railway  a line of track providing a runway for wheels; "he walked along the railroad track"
  supertype:  #track.route  road consisting of a pair of parallel rails providing a runway for wheels
  subtype:  #broad_gauge  #elevated_railway  #gantlet  #rail_line  #narrow_gauge  #railroad_siding  #standard_gauge  #switch.railroad_track
  part:  #railroad_tie  #rails
  part of:  #rail_line__line__railway_line__railwayline  railroad track and roadbed

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