Complex sentence: Donald A. Nixon (b.1946) is a businessman and the son of President Richard Nixon's brother, Donald Nixon (1914-1987) and Clara Jane (1920-2013).
Split into simpler sentences: Donald A. Nixon (b.1946) is a businessman and the son of President Richard Nixon's brother, Donald Nixon and Clara Jane. His parents were Donald Nixon (1914-1987) and Clara Jane (1920-2013).