#crew_member__crewman  a member of a flight crew
  supertype:  #skilled_worker__skilledworker__trained_worker__trainedworker  a worker who has acquired special skills
  subtype:  #aircrewman  #privateersman
  member of:  #crew  the men who man a ship or aircraft
     member of:  #ship's_company__company  crew of a ship including the officers; the whole force or personnel of a ship

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