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It comprised ten cargo ships , three landing ships , tank ( LSTs ) and an escort of five corvette s. The Japanese submarine I-174 attacked the convoy on 16 June , sinking the United States Army transport ship Portmar and damaging USS LST-469 .
 organization: United States Army
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: United States Army 
Answer:
 organization: United States Army