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U . S . and British troops were moving on the strategic southern port city of Basra Saturday after a massive aerial assault pounded Baghdad at dawn .
 U . S, British, the strategic southern port city of Basra, Basra, Baghdad, U . S . and British troops
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, British, the strategic southern port city of Basra, Basra, Baghdad, U . S . and British troops