<prompt> Qedela umusho olandelayo:  <response>: ibhinqa 50 m freestyle kuma-Olympic ehlobo 2004 e-Athene, ngokuthola indawo Universality kusukela FINA, ngesikhathi entry ka 28.48. Uphonsele inselelo abanye ababhukudi abayisikhombisa emncintiswaneni wesine, kuhlanganise noMelanie Slowing waseGuatemala oneminyaka engu-31 ubudala. Wagijimela endaweni yesikhombisa ngemizuzwana emibili kuphela ngemva kukaGeraldine Arce waseNicaragua ngo-28.93. UDe Silva wehlulekile ukudlulela kuma-semifinals, njengoba wabeka isigaba sama-52 esiphelele kwabadlali abangama-75 ngosuku lokugcina lokulungiselela. 