Task: Explanation
Input (English): Australia has participated in all the World Championships in Athletics since the beginning in 1983. Australia is 19th on the all time medal table. Cathy Freeman, Jana Pittman and Sally Pearson are Australia's only multiple gold medal winners, Freeman (bronze) and Pearson (silver) have also each won a place medal.. Other multiple medalists are: Dimitri Markov (1 gold, 1 silver), (2 golds), Jared Tallent (1 silver, 2 bronzes), Kerry Saxby-Junna (1 silver, 1 bronze) and Mitchell Watt (1 silver, 1 bronze). Australia's first World Championships medal was won by Robert De Castella in the Men's marathon in 1983. He won gold. Question: which multiple Australian gold medalist won the 100m hurdles at the 2008 Summer Olympics? Answer: Sally Pearson
Output (English):  Cathy Freeman, Jana Pittman and Sally Pearson are Australias only multiple gold medal winners, Freeman bronze and Pearson silver have also each won a place medal.