<prompt> Feleletša polelo ye e latelago: Ka 1975, de Leeuw o ile a boeletša ka go thopa sefoka sa silifera kua  <response>: Ditšhišinyego tša Yuropa kua Copenhagen, mola Errath gape a thopile gauta. O ile a ba mmampodi wa lefase ka 1975 ka World Championships ka Colorado Springs, Colorado, a fetša pele ga Hamill le Errath, gomme a kgethwa 1975 Dutch mosadi wa moatlelete wa ngwaga. 