Question: What type of chemist was the American who was a fellow of a United states nonprofit governmental organization?
Related documents: [0]  [DOC] Cheves Walling (1916 - June 18, 2007) was an American organic chemist, having been a Distinguished Professor Emeritus at and also the former Editor-in-Chief of "Journal of the American Chemical Society". He was also a Fellow of the National Academy of Sciences and American Academy of Arts & Sciences. [END] 
[1]  [DOC] The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). [END] 
Answer: 
organic chemist
organic chemist