#work_force__workforce__manpower__hands__hand__men  the force of workers available
  supertype:  #personnel__force  group of people willing to obey orders; "a public force is necessary to give security to the rights of citizens"
  member:  #work_party
  subtype:  #full_complement__complement  number needed to make up whole force: "a full complement of workers"
     subtype:  #ship's_company__company  crew of a ship including the officers; the whole force or personnel of a ship
  subtype:  #shift  a group of workers who work for a specific period of time
     subtype:  #day_watch__daywatch__day_shift__dayshift  workers who work during the day (as 8 a.m. to 4 p.m.)
     subtype:  #evening_shift__eveningshift  workers who work during the evening (as 4 p.m. to midnight)
     subtype:  #night_shift__nightshift__graveyard_shift__graveyardshift  workers who work during the night (as midnight to 8 a.m.)

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