#operator.causal_agent__manipulator  an agent that operates some apparatus or machine; "the operator of the switchboard"
  supertype:  #causal_agent__cause__causal_agency  any entity that causes events to happen
  subtype:  #company_operator__companyoperator  an operator who works for a company
  subtype:  #driver  the operator of a motor vehicle
     subtype:  #busman__bus_driver__busdriver  someone who drives a bus
     subtype:  #chauffeur  a man paid to drive a privately owned car
        subtype:  #chauffeuse  a woman chauffeur
     subtype:  #designated_driver  the member of a party who is designated to refrain from alcohol and so is sober when it is time to drive home
     subtype:  #honker  a driver who causes his car's horn to make a loud honking sound; "the honker was fined for disturbing the peace"
     subtype:  #motorist__automobilist  someone who drives (or travels in) an automobile
     subtype:  #owner-driver__ownerdriver  a motorist who owns the car that he/she drives
     subtype:  #race_driver__racedriver__racer__automobile_driver  someone who drives racing cars at high speeds
        instance:  #Berna_Eli_Oldfield__Oldfield__Barney_Oldfield
     subtype:  #road_hog__roadhog  a driver who obstructs others
     subtype:  #speeder__speed_demon__speeddemon  a driver who exceeds the safe speed limit
     subtype:  #tailgater  a driver who follows too closely behind another motor vehicle
     subtype:  #taxidriver__taximan__cabdriver__cabman__cabby__hackdriver  someone who drives a taxi for a living
     subtype:  #trucker__teamster__truck_driver__truckdriver  someone who drives a truck as an occupation
     subtype:  #test_driver  a driver who drives a motor vehicle to evaluate its performance
  subtype:  #elevator_operator  an operator of an elevator
     subtype:  #elevator_girl  a girl employed to operate an elevator
     subtype:  #elevator_man__elevator_boy__liftman  a man employed to operate and elevator; "in England they call an elevator man a liftman"
  subtype:  #locomotive_engineer__engineer__railroad_engineer__engine_driver  the operator of a railway locomotive
     instance:  #John_Luther_Jones__Jones__Casey_Jones
  subtype:  #hoister  an operator of a hoist
  subtype:  #jockey.operator  an operator of some vehicle or machine or apparatus; "he's a truck jockey"; "a computer jockey"; "a disc jockey"
  subtype:  #motorman  the operator of streetcar
  subtype:  #switchman  a man who operates railroad switches
  subtype:  #telegrapher__telegraphist__telegraph_operator__telegraphoperator  someone who transmits messages by telegraph
  subtype:  #telephone_operator__telephoneoperator__telephonist__switchboard_operator__switchboardoperator  someone who helps callers get the person they are calling

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