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By early next week , U . S . ground forces led by the Army ' s 3rd Infantry Division are likely to be at the outskirts of Baghdad , where they could face greater danger from the Republican Guard , some commanders said .
 U . S, Baghdad, the Army, the Army ' s 3rd Infantry Division, the Republican Guard, U . S . ground forces led by the Army ' s 3rd Infantry Division, they, some commanders, where
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 U . S, Baghdad, the Army, the Army ' s 3rd Infantry Division, the Republican Guard, U . S . ground forces led by the Army ' s 3rd Infantry Division, they, some commanders, where