Jan Lever
Jan Lever ( Groningen , 20 July 1922 – Amsterdam , 23 November 2010 ) was a Dutch biologist specialized in zoology , endocrinology and evolutionary biology . 
<triplet> Jan Lever <subj> Groningen <obj> place of birth <subj> 20 July 1922 <obj> date of birth <subj> Amsterdam <obj> place of death <subj> 23 November 2010 <obj> date of death <triplet> Groningen <subj> Dutch <obj> country <triplet> Amsterdam <subj> Dutch <obj> country