Complex sentence: The story is Dahl's variation on a popular anecdote dating back at least to 1939: a married woman receives a glamorous mink coat from a man with whom she had an affair.
Split into simpler sentences: The story is Dahl's variation on a popular anecdote dating back at least to 1939. It involves a married woman who receives a glamorous mink coat from a man with whom she had an affair.