#hazard  an obstacle on a golf course
  supertype:  #obstacle  an obstruction that stands in the way (and must be removed or surmounted or circumvented)
  part of:  #golf_course
  subtype:  #sand_trap__bunker__trap  a hazard on a golf course
  subtype:  #water_hazard__waterhazard  hazard provided by ponds of water that the golfer must avoid

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