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Background Ratliff graduated from Oberlin College and received his M.A. and Ph. D in Chinese / Latin American histories ) from the University of Washington .
 Ratliff, Oberlin College, Latin, University of Washington
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ratliff, Oberlin College, Latin, University of Washington