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After the war , in 1919 , Murphy continued his studies at Columbia University , working towards his Ph.D. , and combined this , until it was awarded in 1923 , with work under the Hodgson Fellowship .
 person: Murphy
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: Murphy 
Answer:
 person: Murphy