#long_time__age__years__year  a prolonged period of time; "we've known each other for ages"; "I haven't been there for years and years"
  supertype:  #time_period__period__period_of_time  an amount of time; "a time period of 30 years"; "hastened the period of his recovery"
  subtype:  #long  a comparatively long time; "this won't take long"; "they haven't been gone long"
  subtype:  #month_of_Sundays  (informal) a time perceived as long; "I hadn't seen him in a month of Sundays"
  subtype:  #eon.long_time__aeon  an immeasurably long period of time
  subtype:  #blue_moon  (informal) a long time; "something that happens once in blue moon almost never happens"

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