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A graduate of the U.S. Naval Academy , Hutchings has also been an officer in the U.S. Navy .
 U.S. Naval Academy, Hutchings, U.S. Navy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 U.S. Naval Academy, Hutchings, U.S. Navy