Complex sentence: He mentions how treacherous they are, and says that their combined area is bigger than mainland Jersey itself, also slightly in one of Nancy Mitford's as an occasional cause for dispute between the' two old ladies'-France and Britain.
Split into simpler sentences: He mentions how treacherous they are, and says that their combined area is bigger than mainland Jersey itself. They are mentioned also slightly in one of Nancy Mitford's as an occasional cause for dispute between the' two old ladies'-France and Britain.