Rolf Spring
Rolf Spring ( born 19 March 1917 ) is a Swiss rower who competed in the 1936 Summer Olympics . 
<triplet> Rolf Spring <subj> 19 March 1917 <obj> date of birth <subj> Swiss <obj> country of citizenship <triplet> 1936 Summer Olympics <subj> 1936 <obj> point in time