Complex sentence: Chimene "Chemmy" Mary Alcott (born 10 July 1982, in Twickenham, London) was a British alpine ski racer, competing on the World Cup circuit in all five disciplines: downhill, super G, giant slalom, slalom, and combined.
Split into simpler sentences: Chimene "Chemmy" Mary Alcott (born 10 July 1982) is a former British World Cup alpine ski racer. She competed in all five disciplines: downhill, super G, giant slalom, slalom, and combined.