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After earning his bachelor 's and master 's degrees at the University of Oslo , he attended Harvard University and earned his Ph.D. in 1961 under Willard Van Orman Quine .
 organization: University of Oslo; organization: Harvard University; person: Willard Van Orman Quine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: University of Oslo, Harvard University, Willard Van Orman Quine 
Answer:
 organization: University of Oslo; organization: Harvard University; person: Willard Van Orman Quine