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Upon his graduation in February 4 , 1975 , he was promoted to the rank of Warrant Officer One ( WO1 ) .
 organization: Warrant Officer One
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Warrant Officer One