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Beshir's main challengers in the race are Yasser Arman a secular Muslim from north Sudan representing the ex-rebel  Sudan  People's Liberation Movement and  Sadiq al-Mahdi  the premier whom Beshir ousted and who now leads the influential Islamist Umma Party .
 countries of residence: Sudan, Sadiq al-Mahdi
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Sudan, Sadiq al-Mahdi 
Answer:
 countries of residence: Sudan, Sadiq al-Mahdi