<prompt> Kalima dǝwo dǝri dǝga wuzǝna dǝ: David Realista Grachat kǝlele 21 January 1987 dǝ kam lardǝ Portuguesebe shiro para-swimmer lan bowotǝnama, shido S9 classification events lan tartǝyinma. Shiye bikkewa Paralympic Summer Games yakkǝro kǝnasartǝna, 2008 Beijing lan,  <response>: 2012 London lan kuru 2016 Rio lan. Grachat dǝ medal Europe-a dunya-a samma so lan kǝnasartǝna, kuru shi dǝ kam kǝlanzǝye 400m ye dǝga wuzǝna. 