#slot_machine__coin_machine  a machine that is operated by the insertion of a coin in a slot
  supertype:  machine  any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
  subtype:  one-armed_bandit  vending_machine
  part:  coin_box  the part of a slot machine that serves as a receptacle for the coins
  part:  coin_slot  a slot through which coins can be inserted into a slot machine

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