318037
For a year he worked at General Electric Company , then he taught at the University of Illinois from 1938 until 1957 , wherein he attained the rank of professor .
 General Electric Company, University of Illinois
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 General Electric Company, University of Illinois