#flue  a conduit to carry off smoke
  supertype:  conduit__channel  a passage for water (or other fluids)
  subtype:  chimney  a vertical flue that provides a path through which smoke from a fire is carried away through the wall or roof of a building
     subtype:  smokestack__stack  a large tall chimney through which combustion gases and smoke can be evacuated
        subtype:  funnel  smokestack consisting of a shaft for ventilation or the passage of smoke (especially the smokestack of a ship)
     subtype:  stovepipe  chimney consisting of a metal pipe of large diameter that is used to connect a stove to a flue
  subtype:  chimneystack  the part of the chimney that is above the roof; usually has several flues
  subtype:  lamp_chimney__chimney  a glass flue surrounding the wick of an oil lamp

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