<prompt> Pedzisa mutsara unotevera: Hem Thon Vitiny ; akaberekwa musi wa7 Gunyana 1993 muPhnom Penh, Cambodia mutambi wekushambira wekuCambodia. Akakwikwidza kumaOlympics eZhizha ra2012 mu  <response>: 50 m freestyle chiitiko uye akapedza aine chinzvimbo che57 mumutambo wekutanga. Vitiny haana kuenda kumasemifinal. 