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It lies just 12 miles from Baghdad and will be a key forward base for U . S . troops as they prepare for a push on the capital .
 geographical social political: Baghdad; geographical social political: U . S; geographical social political: the capital; person: U . S . troops; person: they; facility: It; facility: a key forward base for U . S . troops
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 geographical social political: Baghdad; geographical social political: U . S; geographical social political: the capital; person: U . S . troops; person: they; facility: It; facility: a key forward base for U . S . troops