<prompt> Benz, owazalelwa eZurich, wathola izindondo eziyisishiyagalombili kumaFIBT World Championships ngezindondo ezintathu zegolide Ezabantu ababili: 1978, 1979; Ezabantu abane: 1981  <response>: , ezimbili zesiliva Four-man: 1977, 1978 nezintathu zethusi Two-man: 1981, Four-man: 1979, 1981. 