Complex sentence: Dawn Riley (born 21 July 1964) is an America's Cup and Around the World Sailboat racer who is also an accomplished businesswoman, community leader and youth sports advocate, author, speaker, TV commentator and committed philanthropist.
Split into simpler sentences: Dawn Riley (born July 21,1964) is an American sailor who has competed in the America's Cup and Around the World Sailboat races. She is also an accomplished businesswoman, community leader and youth sports advocate, author, speaker, TV commentator and committed philanthropist.