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The government of Chad accuses Sudan of supporting the rebel groups menacing Mr. Deby 's rule , and Sudan contends that Chad has helped non-Arab rebel groups in Darfur that are fighting the Arab-dominated government and its allied Arab tribal militias .
 country of administrative divisions: Sudan, Darfur; administrative division of country: Darfur, Sudan; location contains: Sudan, Darfur; administrative division of country: Darfur, Sudan; location contains: Sudan, Darfur; country of administrative divisions: Sudan, Darfur
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Sudan, Darfur; Darfur, Sudan; Sudan, Darfur; Darfur, Sudan; Sudan, Darfur; Sudan, Darfur 
Answer:
 country of administrative divisions: Sudan, Darfur; administrative division of country: Darfur, Sudan; location contains: Sudan, Darfur; administrative division of country: Darfur, Sudan; location contains: Sudan, Darfur; country of administrative divisions: Sudan, Darfur