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The goal of a society was therefore viewed by MacKaye as the problem of finding that arrangement which would produce the highest output of happiness attainable given the inputs available .
 person: MacKaye
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: MacKaye 
Answer:
 person: MacKaye