<prompt> Pedzisa mutsara unotevera: Manfred Walter aimbova mujaho wokuSwitzerland wokukwasva chikepe uyo akakwikwidza muma1970. Akakunda menduru yesirivha mumutambo wechikwata cheC-2 pa  <response>: 1977 ICF Canoe Slalom World Championships muSpittal. 