<prompt> Ngwala go tšwela pele bakeng sa serapa se - Madeja gape o thopile dimetale tše tharo go ICF Canoe Sprint World Championships ka silifera C-2 1000 m: 1981 le bronze tše pedi C-2 500 m: 1985  <response>: , C-2 1000 m: 1982. 