Xu Guangxian
Xu Guangxian ( ; November 7 , 1920 – April 28 , 2015 ) , also known as Kwang-hsien Hsu , was a Chinese chemist . 
<triplet> Xu Guangxian <subj> November 7, 1920 <obj> date of birth <subj> April 28, 2015 <obj> date of death