#truck__motortruck  an automotive vehicle suitable for hauling
  supertype:  motor_vehicle__motorvehicle__automotive_vehicle  a self-propelled wheeled vehicle that does not run on rails
  subtype:  dump_truck  fire_engine  garbage_truck  camion  pickup_truck  sound_truck  tow_truck  tractor.truck  trailer_truck  transporter.truck  van
  part:  bumper  a mechanical device consisting of bars at either end of vehicle absorb shock and prevent damage
     part:  bumper_guard  vertical bars attached to a bumper to prevent locking bumpers with another vehicle
  part:  roof.protective_cover  protective covering on top of a motor vehicle
  part:  tailgate__tailboard  a gate at the rear of a vehicle; can be lowered for loading

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