<prompt> Qedela umusho olandelayo: UJiří Krejza ungumshayeli wezikebhe waseSwitzerland owazalelwa eCzechoslovakia owaqhudelana kusukela ekuqaleni kwawo-1970 kuya ekuqaleni kwawo-1980. Wathola izindondo ezine eMqhudelwaneni Womhlaba we-ICF Canoe Slalom ngegolide C-2: 1973 yeCzechoslovakia, isiliva ezimbili ithimba le-C-2: 1973 leCzechoslovakia,  <response>: Ngo-1977 eSwitzerland nethusi i-Mixed C-2: 1971 eCzechoslovakia. 