Sherone Simpson
She is a gold medalist in the 4 × 100 m relay from the 2004 Olympics and silver medalist in 2005 World Championships and now is the silver medalist in the individual event at the 2008 Summer Olympics , after she tied for second with Kerron Stewart in a photo finish . 
<triplet> 2004 Olympics <subj> 2004 <obj> point in time <triplet> 2005 World Championships <subj> 2005 <obj> point in time