<prompt> Ngwala tšwetšopele ya serapa se - Hans Olsson yo a belegwego ka la 18 Disemere 1964 ke monamedi wa seketswana wa Sweden yo a phadišanego go tloga mafelelong a bo-1980 go fihla bogareng bja bo-1990. O thopile dimetale tše pedi ka ICF Canoe Sprint World Championships ka gauta K-4 10000 m: 1990  <response>: , 1991. 