Complex sentence: She competed in two Olympic Games, 1992 Barcelona and 1996 Atlanta, winning a gold medal in team eventing at both competitions; at both games she rode her horse, Peppermint Grove, named after Peppermint Grove in Western Australia.
Split into simpler sentences: She competed in two Olympic Games, 1992 Barcelona and 1996 Atlanta, winning a gold medal in team eventing at both competitions;. At both games she rode her horse, Peppermint Grove, named after Peppermint Grove in Western Australia.