Youba Hmeida
He represented Mauritania at the 2004 Summer Olympics , and also set a national record and a personal best of 47 . 87 on his sporting debut from the 2001 IAAF World Championships in Edmonton , Alberta , Canada . 
<triplet> 2004 Summer Olympics <subj> 2004 <obj> point in time <triplet> 2001 IAAF World Championships <subj> 2001 <obj> point in time <subj> Canada <obj> country <triplet> Edmonton, Alberta <subj> Canada <obj> country