#racehorse__bangtail__race_horse  a horse bred for racing
  supertype:  #horse__Equus_caballus  solid-hoofed herbivorous quadruped domesticated since prehistoric times
  subtype:  #pony.racehorse  an informal term for a racehorse; "he liked to bet on the ponies"
  subtype:  #yearling.racehorse  a racehorse considered one year old until the second Jan. 1 following its birth
  subtype:  #dark_horse  a racehorse about which little is known
  subtype:  #mudder  a racehorse that runs well on a muddy racetrack
  subtype:  #nonstarter  a horse that fails to run in a race for which it has been entered
  subtype:  #pacemaker__pacer__pacesetter  a horse used to set the pace in racing
  subtype:  #trotting_horse__trotter  a horse trained to trot especially one trained for harness racing
     subtype:  #pole_horse  the horse having a starting position next to the inside rail in a harness race

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