<prompt> Tlatša polelo ye e latelago: Kurt Poletti yo a belegwego ka la 23 Aprele 1960 ke motshameki wa bob ya Switzerland yo a ilego a phadišana mathomong a bo-1980. O thopile dimetale tše pedi ka papading ya banna ba bane go FIBT World Championships ka gauta ka 1983 le silifera ka  <response>: 1981 - Ke Eng Seo se Diregilego? 