#transmission_system__transmission  the gears that transmit power from an automobile engine via the driveshaft to the live axle
  supertype:  gear_mechanism__gear  a mechanism for transmitting motion by gears for some specific purpose (as the steering gear of a vehicle)
  subtype:  automatic_transmission  four-wheel_drive  standard_transmission
  part:  clutch.coupler  fluid_drive  gearbox
  part of:  drive_line_system__drive_line__driveline  mechanism that transmits power from the engine to the driving wheels of a motor vehicle
     part of:  motor_vehicle__motorvehicle__automotive_vehicle  a self-propelled wheeled vehicle that does not run on rails

No statement uses or specializes transmission_system; click here to add one.