 Complete the following phrase:  At the 1960 Summer Paralympics, he competed in the Mens Precision Javelin, where he won a silver medal. He was a member of the Australian wheelchair basketball team at the 1962 Commonwealth Paraplegic Games in Perth. At the 1964 Summer Paralympics in Tokyo, Ponta competed in Class 2 Mens swimming in the 25 m breaststroke event, where he failed to medal. At those same games, he also competed in the class 2 Mens 25 m Freestyle Supine event, where he won a gold medal. He also competed in wheelchair fencing at the 1964 Games in the Eppee Team event, where he did not medal, and the Mens Foil Novice Individual, where he won a silver medal. At the 