97288
From 1983 to 1991 , he was Professor of Physics and Director of the Energy , Environment , and Resources Center at the University of Tennessee where he worked closely with scientists at Oak Ridge National Laboratory .
 University of Tennessee
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 University of Tennessee