<prompt> Ngwala go tšwela pele ka serapa se - O ile a phadišana go FIS Freestyle World Ski Championships ka 1986  <response>: kua Tignes, moo a ilego a ba wa bohlano ka acroski ballet ya ski. O thopile sefoka sa gauta go ski ballet go FIS Freestyle World Ski Championships 1991 kua Lake Placid. O thopile sefoka sa bobedi sa gauta ka go ski ballet ka FIS Freestyle World Ski Championships ka 1993 ka Altenmarkt-Zauchensee. Kua FIS Freestyle World Ski Championships 1995 kua La Clusaz o thopile sefoka sa silibera. 