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a reuters correspondent said dozens of iraqi civilians and soldiers were killed in what witnesses called a barrage of u . s . artillery .
 iraqi, u . s, reuters, a reuters correspondent, dozens of iraqi civilians and soldiers, witnesses, u . s . artillery
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:
 iraqi, u . s, reuters, a reuters correspondent, dozens of iraqi civilians and soldiers, witnesses, u . s . artillery