#recurrence__return  happening again (especially at regular intervals); "the return of spring"
  supertype:  #repeat__repetition  an event that repeats; "the events today were a repeat of yesterday's"
  subtype:  #atavism__throwback  a reappearance of an earlier characteristic
  subtype:  #flashback.recurrence  an unexpected but vivid recurrence of a past experience (especially a recurrence of the effects of an hallucinogenic drug taken much earlier)

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