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Warner was enlisted in the United States Army , serving in World War I as an aerial observer and later as an attorney in the War Production Board during World War II .
 person: Warner; organization: United States Army; organization: War Production Board
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:
 person: Warner; organization: United States Army; organization: War Production Board