<prompt> Joris Willem Eelco Tjebbes November 5 1929, Vlissingen  July 31 2001, Hoogeveen shima Dutch freestyle swimmer ye. Shiye medal konnuye sәdәna suro 1950 European Aquatics Championships lan  <response>: kuru suro 1952 Summer Olympicsben bikke makkarbe sadǝna. Suro saa 1950 səta 1952, Tjebbes shima kambo lardəye suro mita 100a 400a lan kuru shiye rekod lardəye tulur suro mita 100a, mita 200a kuru mita 400a lan. 