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He graduated from St. Olaf College ( 1929 ) , earned his Masters from University of Minnesota ( 1930 ) and his Doctorate from Columbia University in ( 1938 ) .
 organization: St. Olaf College; organization: University of Minnesota; organization: Columbia 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: St. Olaf College, University of Minnesota, Columbia University 
Answer:
 organization: St. Olaf College; organization: University of Minnesota; organization: Columbia University