<prompt> Pedzisa mutsara unotevera: David Realista Grachat akaberekwa musi wa21 Ndira 1987 muPortugal para-swimmer, achikwikwidza mumakwikwi eS9. Akakwikwidza paMitambo yeParalympic yeZhizha mitatu, 2008 muBeijing,  <response>: 2012 muLondon uye 2016 muRio. Grachat akahwina menduru pazvose zviri zviviri zveEuropean uye zveNyika, uye anonyanya kuita 400m freestyle. 