#electric_lamp  a lamp powered by electricity
  supertype:  #lamp  an artificial source of visible illumination
  subtype:  #arc_lamp__arclamp__arc_light__arclight  a lamp that produces light when electric current flows across the gap between two electrodes
     subtype:  #carbon_arc_lamp__carbon_arc  has carbon electrodes
        subtype:  #klieg_light__klieglight  carbon arc lamp that emits an intense light used in producing films
  subtype:  #electric-discharge_lamp__gas-discharge_lamp__gasdischargelamp  an electric lamp in which the light comes from an electric discharge between two electrodes in a glass tube
  subtype:  #flashlight__torch  a small portable battery-powered electric lamp
     subtype:  #penlight  a small flashlight resembling a fountain pen
  subtype:  #electric-light_bulb__light_bulb__lightbulb__lightbulb__bulb__incandescent_lamp__electric_light  electric lamp consisting of a glass bulb containing a wire filament (usually tungsten) that emits light when heated

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