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He commenced his university studies in 1928 at Trinity College , Durham , in what was to become Duke University 's School of Religion , and from which he obtained his B.A. in 1931 .
 organization: Duke University
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Duke University 
Answer:
 organization: Duke University