<prompt> Kǝla fasal adǝyen fuwuzǝyin - Roland Wyss dǝ kam kǝla kǝnǝngatǝwu slalom Switzerlandbe buro salakye shido suro saa 1970s lan kǝla kǝla kǝnǝngatǝwuye sǝdǝna ma. Shiye medal indi suro C-2 team eventbe dәn suwudәna suro ICF Canoe Slalom World Championships lan kuru shiye silver lan saa 1977 lan  <response>: kuru bronze saa 1979 lan. 