#cart  a heavy open wagon usually having two wheels and drawn by an animal
  supertype:  wagon__waggon  any of various kinds of wheeled vehicles drawn by a horse or tractor
  subtype:  dogcart  dumpcart  horsecart  jaunting_car  jinrikisha  oxcart  ponycart  water_cart
  part:  axletree  a dead axle on a carriage or wagon that has terminal spindles on which the wheel revolve
  part:  cartwheel.wheel  a wheel that has wooden spokes and a metal rim
     part:  spoke__radiu  support consisting of a radial member of a wheel joining the hub to the rim
     part:  wagon_tire__wagontire  a metal hoop forming the tread of a wheel

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