<prompt> Ngwala tšwetšopele ya serapa se - Silovs gape o ile a phenkgišana go Universiade ya 1973 kua Moscow, a thopa gauta go lebelo la dimithara tše 100, gotee le silifera go lebelo la sehlopha sa 4x100 m relay. O ile a ba a thopa gauta ka 1975  <response>: le ka 1977 go lebelo la 4x100 m relay. 