#waiting_line__waitingline__queue  a line of people or vehicles waiting for something
  supertype:  #line.formation  a formation of people or things one behind another; "the line stretched clear around the corner"; "you must wait in a long line at the checkout counter"
  subtype:  #breadline__bread_line__breadline  a queue of people waiting for free food
  subtype:  #checkout_line  a queue of people waiting to pay for purchases
  subtype:  #chow_line  a queue of people waiting for food to be served (especially at a military camp)
  subtype:  #gas_line.waiting_line__gasline  a queue of vehicles waiting to purchase gasoline
  subtype:  #reception_line__receptionline  a line of people (hosts and guests of honor) who welcome the guests at a reception party
  subtype:  #ticket_line  a queue of people waiting to buy tickets
  subtype:  #unemployment_line  a queue of people waiting for employment

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