#bell.sound  the sound of a bell: "saved by the bell"
  supertype:  #sound.happening  the sudden occurrence of an audible event; "the sound awakened them"
  subtype:  #knell  the sound of a bell rung slowly to announce a death or a funeral or the end of something
  subtype:  #angelus_bell__angelusbell__angelus__angelu  the sound of a bell rung in Roman Catholic churches to announce the time when the Angelus should be recited

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