Complex sentence: Masami Tanaka (born January 5,1979 in Hokkaidō) is a former breaststroke swimmer from Japan, who won the bronze medal in the 4x100m Medley Relay at the 2000 Summer Olympics in Sydney, Australia.
Split into simpler sentences: Masami Tanaka (born January 5,1979 in Hokkaidō) is a former breaststroke swimmer from Japan. She won the bronze medal in the 4x100m Medley Relay at the 2000 Summer Olympics in Sydney, Australia.