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Operational Test and Evaluation Force ( OPTEVFOR ) - U.S. Navy
 Operational Test and Evaluation Force ( OPTEVFOR ) - 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:
 Operational Test and Evaluation Force ( OPTEVFOR ) - U.S. Navy