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He got his A.B. degree in 1933 , received a Sheldon Fellowship for a year of travel , and returned to Harvard for his doctoral studies in 1934 .
 organization: Harvard
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Harvard