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The battle for Basra , an oil hub of some 1 . 3 million people , was underway by midday , with coalition troops trying to surround Iraqi positions and force a surrender .
 Basra, an oil hub of some 1 . 3 million people, coalition, Iraqi, some 1 . 3 million people, coalition troops, Iraqi positions
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:
 Basra, an oil hub of some 1 . 3 million people, coalition, Iraqi, some 1 . 3 million people, coalition troops, Iraqi positions