#lawn_mower__mower  garden tool for mowing grass on lawns
  supertype:  #garden_tool__lawn_tool  used for working in gardens or yards
  part:  #blade.cutting_implement
  subtype:  #hand_mower  a lawn mower that is operated by hand
  subtype:  #power_mower__motor_mower  a lawn mower powered by a gasoline motor
     subtype:  #riding_mower  a power mower you can ride on

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