Complex sentence: Troy Dalbey (born September 9,1968) is a former freestyle swimmer from the United States, who won two gold medals at the 1988 Summer Olympics in Seoul, South Korea.
Split into simpler sentences: Troy Dalbey (born September 9,1968) is a former American swimmer and Olympic gold medalist. Dalbey won two gold medals at the 1988 Summer Olympics in Seoul, South Korea.