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Diamonds mined during the recent civil wars in Angola , Ivory Coast , Sierra Leone , and other nations have been labelled as blood diamonds when they are mined in a war zone and sold to finance an insurgency .
 Angola, Ivory Coast, Sierra Leone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Angola, Ivory Coast, Sierra Leone