Petr Čermák
Petr Čermák ( born 24 December 1942 ) is a Czech rower who competed for Czechoslovakia in the 1964 Summer Olympics and in the 1968 Summer Olympics . 
<triplet> Petr Čermák <subj> 24 December 1942 <obj> date of birth <subj> rower <obj> sport <triplet> 1964 Summer Olympics <subj> 1964 <obj> point in time <subj> 1968 Summer Olympics <obj> followed by <triplet> 1968 Summer Olympics <subj> 1964 Summer Olympics <obj> follows <subj> 1968 <obj> point in time