<prompt> Ngwala tšwetšopele ya serapa se - Igor Yevgrafov ; o belegwe ka 1955 ke moapei yo a rotšego modiro wa Soviet yo a thopilego sefoka sa bronze ka 1500 m freestyle ka 1974 European Aquatics Championships  <response>: O ile a ba a thopa difoka tša bosetšhaba ka go yona tiragalo yeo ka 1973 le 1975 gomme a bea rekoto ya Yuropa ka go 800 m freestyle ka 1975. 