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The first principal and president was Dwight B. Waldo , who served from 1904 until 1936 .
 person: Dwight B. Waldo
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:
 person: Dwight B. Waldo