148652
Also in 1951 , he joined the U.S. Department of State as an intelligence research specialist , a post he held until 1954 , when he completed a Ph.D. in political science at the University of Michigan .
 U.S. Department of State, University of Michigan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 U.S. Department of State, University of Michigan