#boatman__boater__waterman  someone who drives or rides in a boat
  supertype:  #worker  a person who works at a specific job; "he is a good worker"
  subtype:  #canoeist__paddler  someone paddling a canoe
  subtype:  #ferryman  a man who operates a ferry
     instance:  #Charon
  subtype:  #gondolier__gondoliere  a (Venetian) boatman who propels a gondola
  subtype:  #oarsman__rower  someone who rows a boat
     subtype:  #oarswoman  a woman oarsman
     subtype:  #sculler  someone who sculls (moves a long oar pivoted on the back of the boat to propel the boat forward)
     subtype:  #stroke.oarsman  the oarsman nearest the stern of the shell who sets the pace for the rest of the crew
  subtype:  #punter.boatman  someone who propels a boat with a pole

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