<prompt> Martin Wyss dǝ kam kǝla kǝnǝnga slalomye Switzerlandbe kǝla kǝnǝnga canoeyedǝ suro saa 1970sben kǝla kǝnǝnga canoeyedǝro kǝla kǝnǝnga canoeyedǝro kǝnǝngatǝ. 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. 