<prompt> Ngwala tšwetšopele ya serapa se - O ile a fetogela go go kuka boima ka 1989, gomme a thopa silifera go Dikgaisano tša Lefase tša 1989  <response>: .. le O thopile gauta ka 1990, silifera ka 1991, gauta ka 1994, silifera ka 1995, bronze ka 1996, silifera ka 1997 le bronze ka 1998 World Weightlifting Championships. 