Complex sentence: Swanson is the husband of Shana Madoff, daughter of Peter Madoff, and a niece of Bernard Madoff, who operated a Ponzi scheme that is considered to be the largest financial fraud in U.S. history.
Split into simpler sentences: Swanson is the husband of Shana Madoff, who is daughter of Peter Madoff. She is also a niece of Bernard Madoff, who operated a Ponzi scheme that is considered to be the largest financial fraud in U.S. history.