<prompt> Barros dәye kәla kәnәngalan medal konnube dәga sәdәna suro 4 × 100 meters relay dәn suro Olympic Summer 2008 dәn  <response>: Saa 2017 lan jami Jamaicanbe dәga cissәna ngawo Nesta Carterye jarawa anti-dopingye dәga kolzәna dә. 