#racetrack__racecourse__raceway__track  a course over which races are run
  supertype:  #course.area  facility consisting of a circumscribed area of land or water laid out for a sport; "the course had only nine holes"; "the course was less than a mile"
  part:  #stretch.straightaway  #inside_track.path
  subtype:  #cinder_track  a racetrack paved with fine cinders
  subtype:  #dirt_track  a racetrack that is not paved
     subtype:  #Belmont_Park  a racetrack for horse racing in Elmont on Long Island; site of the Belmont Stakes
     subtype:  #Churchill_Downs  a racetrack for horse races in Louisville; site of the Kentucky Derby
     subtype:  #Pimlico  a racetrack for horse racing; site of the Preakness
  subtype:  #racing_circuit__circuit  (British) a racetrack for automobile races
  subtype:  #speedway  a racetrack for racing automobiles or motorcycles

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