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The transitional government was appointed Friday after ousted Mauritanian leader  Sidi Ould Cheikh Abdallahi  signed the decree and then officially resigned in front of the  Constitutional Council  and Senegalese President Abdoulaye Wade who has led mediation efforts .
 None
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 NA: Sidi Ould Cheikh Abdallahi, Constitutional Council