#steam_boiler__steamboiler__boiler  sealed vessel where water is converted to steam
  supertype:  vessel  an object used as a container (especially for liquids)
  subtype:  auxiliary_boiler  an extra boiler (as a ship's boiler that is used while the ship is in port)
  member:  boilerplate
  part:  steam_whistle
  part of:  heating_system__heatingsystem__heating_plant__heatingplant__heating__heat  utility to warm a building; "the heating system wasn't working"; "they have radiant heating"
     part of:  edifice__building  a structure that has a roof and walls and stands more or less permanently in one place; "there was a three-story building on the corner"; "it was an imposing edifice"
  part of:  steam_engine__steamengine  external-combustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder
     part of:  steamship__steamer  a ship powered by one or more steam engines
     part of:  steam_locomotive__steamlocomotive  a locomotive powered by a steam engine

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