Complex sentence: Trebisonda Valla, also known as Ondina Valla (20 May 1916-16 October 2006) was an Italian female athlete, and the first Italian woman to win an Olympic gold medal.
Split into simpler sentences: Trebisonda Valla, also known as Ondina Valla (20 May, 1916-16 October, 2006) is an Italian female former athlete. She was the first Italian woman to win an Olympic gold medal.