93961
He was an NSF Postdoctoral Fellow at the University of Paris in Orsay ( 1969 – 70 ) and a postdoctoral Research Associate at Brown University ( 1970 – 71 ) .
 NSF, Fellow, University of Paris, Orsay
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 NSF, Fellow, University of Paris, Orsay