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History and Current Programs ESR was founded in 1960 by Wilmer Cooper , D. Elton Trueblood and others for the training of Quaker ministers .
 person: D. Elton Trueblood
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: D. Elton Trueblood 
Answer:
 person: D. Elton Trueblood