Complex sentence: Benjamin "Ben" Dalley (15 March 1916-19 March 2005) born in Balmain, New South Wales, he became an Australian water polo player who competed in the 1948 Summer Olympics.
Split into simpler sentences: Benjamin "Ben" Dalley (15 March 1916-19 March 2005) born in Balmain, New South Wales. He was an Australian water polo player who competed in the 1948 Summer Olympics.