#warning_signal__warningsignal__alarm__alert__alarum  an automatic signal (usually a sound) warning of danger
  supertype:  #signal__sign__signaling  any communication that encodes a message; "signals from the boat suddenly stopped"
  subtype:  #tocsin__alarm_bell__alarmbell  the sound of an alarm (usually a bell)
  subtype:  #siren.warning_signal  a warning signal that is a loud wailing sound
  subtype:  #burglar_alarm.warning_signal__burglaralarm  a loud warning signal produced by a burglar alarm; "they could hear the burglar alarm a mile away"
  subtype:  #fire_alarm  a shout or bell to warn that fire has broken out
  subtype:  #fogsignal__foghorn  a loud low warning signal that can be heard by fog-bound ships
  subtype:  #horn.warning_signal  a noise made by the driver of an automobile to give warning;

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