Sentence:  Nakamura ( ' 58 ) , Verloop ( ' 48 ) , Marchand , Gilroy and Watson ( ' 50 ) , <WSD>von</WSD> Hayek ( ' 53 ) , and Tobin ( ' 52 ) have all claimed their normal but relatively nonfunctional existence in the human being . 
Meaning of the word marked with <WSD> tags:  a human being