23468
Its presence is certainly greatest in the resource-rich countries like Nigeria , Angola and Sudan -LRB- where its role has been criticized as contributing to the crisis in Darfur -RRB- .
 country of administrative divisions: Sudan, Darfur; administrative division of country: Darfur, Sudan; location contains: 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 
Answer:
 country of administrative divisions: Sudan, Darfur; administrative division of country: Darfur, Sudan; location contains: Sudan, Darfur