Complex sentence: Tracey Wickham (born November 24,1962) is a former Australian middle distance swimmer, who won both the 400 m and 800 m freestyle at the 1978 Commonwealth Games.
Split into simpler sentences: Tracey Wickham (born 24 November 1962) is a former Australian middle distance swimmer. In 1978, Wickham won both the 400 m and 800 m freestyle at the 1978 Commonwealth Games.