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The Pentagon says two of the Republican Guard divisions defending Baghdad are no longer credible forces .
 Baghdad, The Pentagon, two of the Republican Guard divisions defending Baghdad, the Republican Guard divisions defending Baghdad, Republican Guard, credible forces
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:
 Baghdad, The Pentagon, two of the Republican Guard divisions defending Baghdad, the Republican Guard divisions defending Baghdad, Republican Guard, credible forces