René Duhamel
He has competed at the 1960 Summer Olympics and in the 1964 Summer Olympics . 
<triplet> 1960 Summer Olympics <subj> 1960 <obj> point in time <subj> 1964 Summer Olympics <obj> followed by <triplet> 1964 Summer Olympics <subj> 1960 Summer Olympics <obj> follows <subj> 1964 <obj> point in time