Hans Martin Gulbrandsen
He competed at the 1948 Summer Olympics in London where he finished 4th in the K-1 1000 m event , and at the 1952 Summer Olympics in Helsinki , where he finished 5th in K-1 10000 m . 
<triplet> 1948 Summer Olympics <subj> 1948 <obj> point in time <subj> 1952 Summer Olympics <obj> followed by <triplet> 1952 Summer Olympics <subj> 1948 Summer Olympics <obj> follows