<prompt> Bhala okuqhubekayo kwalesi sigaba - UMartin Wyss ungumgibeli wezikebhe waseSwitzerland owayekade egijima ngesikebhe esiyi-slalom owaqhudelana ngawo-1970. Wathola izindondo ezimbili emncintiswaneni weqembu le-C-2 kuma-ICF Canoe Slalom World Championships nge isiliva ngo-1977  <response>: nomqhele wethusi ngo-1979. 