<prompt> Qedela umusho olandelayo: Wayemele i-United States eMkhandlwini  <response>: 2017 World Junior Championships e-Indianapolis, iwina indondo yesiliva emjahweni wokudonsa ngamamitha angu-4x200. UCallan uphinde wabekwa endaweni yesine emdlalweni wokugcina wamamitha angama-200 womuntu ngamunye. 