9861
An investigation is under way at a makeshift morgue in southern Iraq after a gruesome discovery by some British troops .
 British, some British troops, a makeshift morgue in southern Iraq, southern Iraq
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:
 British, some British troops, a makeshift morgue in southern Iraq, southern Iraq