Complex sentence: Stark represented the United States as a 15-year-old at the 1952 Summer Olympics in Helsinki, Finland, where she finished in fifth place in the women's 100-meter backstroke final with a time of 1:16.2.
Split into simpler sentences: Stark represented the United States as a 15-year-old at the 1952 Summer Olympics in Helsinki, Finland. She competed in the women's 100-meter backstroke, advanced to the event final, and finished fifth with a time of 1:16.2.