Complex sentence: She also won a silver medal in the 400 meters at the 2011 world champioships and a gold medal at the Beijing 2008 Olympics as a member of the United States'women's 4 × 400 meters team.
Split into simpler sentences: She also won a silver medal in the 400 meters. She is also an Olympic gold medalist, winning gold at the Beijing 2008 Olympics as a member of the United States'women's 4 × 400 meters team.