Bernt Lindelöf
Lindelöf also competed in four Summer Olympics , earning his best finish of fifth in the C-2 1000 m event at Mexico City in 1968 . 
<triplet> Summer Olympics <subj> 1968 <obj> has part <triplet> C-2 1000 m <subj> 1968 <obj> point in time <triplet> 1968 <subj> Mexico City <obj> location <subj> 1968 <obj> point in time