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and these pictures show iraqis running for cover just before u . s . planes dropped a bomb near northern iraq .
 u . s, iraqis, u . s . planes, northern iraq, a bomb
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, iraqis, u . s . planes, northern iraq, a bomb