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Abubakar Tafawa Balewa  University ( ATBU ) is a federal university of technology located in Bauchi northern  Nigeria  .
 country of headquarters: Abubakar Tafawa Balewa, Nigeria
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:  Abubakar Tafawa Balewa, Nigeria 
Answer:
 country of headquarters: Abubakar Tafawa Balewa, Nigeria