<prompt> Qedela umusho olandelayo: Wabamba iqhaza kuma-Olympics asehlobo ka-1964 i-semi-final ku-200 m, eyisithupha ku-4 × 100 metres relay naku-1968 Summer Olympics ukushisa ku-400 m,  <response>: okwesihlanu emjahweni we-4 × 100 metres relay. 