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U.S. plans rely heavily on U.S. air attacks on Iraqi forces , but there are also 23,000 U.S. troops in the region , according to defense officials .
 location: U.S.; else: Iraqi; location: U.S.; location: U.S.
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 location: U.S.; else: Iraqi; location: U.S.; location: U.S.