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William F. Whiting replaced Herbert Hoover as U.S. Secretary of Commerce .
 person: William F. Whiting; person: Herbert Hoover; person: U.S. Secretary of Commerce
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: William F. Whiting, Herbert Hoover, U.S. Secretary of Commerce 
Answer:
 person: William F. Whiting; person: Herbert Hoover; person: U.S. Secretary of Commerce