#pull_chain  a chain (usually with a handle at the end) that is pulled in order to operate some mechanism (e.g. to flush a toilet)
  supertype:  chain.ligament  pull.device
  part of:  flush_toilet__flushtoilet__lavatory  a toilet that is cleaned of waste by the flow of water through it

No statement uses or specializes pull_chain; click here to add one.