<prompt> Pedzisa mutsara unotevera: Musi waJune 30, 2012, akapedza ari wechipiri kumashure kwemukoma wake pamamita 100 pa2012 Nationals Track Field Championships muCalgary. Akakwikwidza kumaOlympics eZhizha ra2012 mu  <response>: Vakomana 4 x 100 metres relay chiitiko nemukoma wake Justin. 