Complex sentence: More than a decade later Dorsey claimed that he had been threatened by mobsters connected with Sinatra, and this version of events was closely referenced in "The Godfather", in the anecdote Michael Corleone relates to his fiancée Kay Adams, about the singer Johnny Fontane.
Split into simpler sentences: More than a decade later Dorsey claimed that he had been threatened by mobsters connected with Sinatra. This version of events was referenced in "The Godfather", in the anecdote Michael Corleone relates to his fiancée Kay Adams, about the singer Johnny Fontane.