<prompt> Nyora kupfuurira kweiyi ndima - Roland Wyss aimbova muSwitzerland slalom canoeist uyo akakwikwidza muma1970. Akakunda menduru mbiri mumutambo weC-2 wechikwata paICF Canoe Slalom World Championships nesirivha muna 1977  <response>: uye menduru yebronze muna 1979. 