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He imagined the application of his ideas to the design of a human community in his utopian novel , " Walden Two " ( 1948 ) , while his analysis of human behavior culminated in his work , " Verbal Behavior " .
 None
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:  
Answer:
 None