#concomitant__accompaniment__co-occurrence  an event or situation that happens at the same time as or in connection with another
  supertype:  happening__occurrence__natural_event__naturalevent  an event that happens
  subtype:  associate.concomitant  any event that usually accompanies or is closely connected with another; "first was the lightning and then its thunderous associate"
  subtype:  background.concomitant  relatively unimportant or inconspicuous accompanying situation: "when the rain came he could hear the sound of thunder in the background"

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