7909
However Bello chose to remain as premier of the North and as party boss of the NPC selected Sir  Abubakar Tafawa Balewa  a Hausa to become  Nigeria  's first Prime Minister .
 countries of residence: Abubakar Tafawa Balewa, 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:
 countries of residence: Abubakar Tafawa Balewa, Nigeria