<prompt> Qedela umusho olandelayo: UBataz ubelokhu eyilungu leqembu laseMexico lezemidlalo emidlalweni yase-Athens ngo-2004, eBeijing ngo-2008  <response>: Imidlalo Yama-Olympic Yabantu Abakhubazekile YaseLondon 2012. 