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 While Sudan has been in a two-decades-long civil war that has claimed thousands of lives through fighting and famine , the state initiatives picked up momentum after Colin L. Powell , then the secretary of state , said in late 2004 that the United States viewed violence in the Darfur region of western Sudan as genocide . 
 Darfur, Sudan; Sudan, Darfur
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 Darfur, Sudan; Sudan, Darfur