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Maryam Abacha ( born 4 March 1947 Kaduna ) is the widow of  Sani Abacha  de facto President of  Nigeria  from 1993 to 1998 .
 country of birth: Sani Abacha, Nigeria
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:
 country of birth: Sani Abacha, Nigeria