<prompt> Qedela lo musho olandelayo: UBarros uzonikezwa indondo yethusi ngenxa  <response>: I- 4 × 100 metres relay kuma-Olympics asehlobo ka-2008 kulandela ukwehliswa esikhundleni ngo-2017 kweqembu laseJamaica ngenxa yokuhlolwa kwe-anti-doping kukaNesta Carter okungaphumelelanga. 