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During the Second World War , he worked for the United States Board of Economic Warfare .
 organization: Board of Economic Warfare
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: Board of Economic Warfare 
Answer:
 organization: Board of Economic Warfare