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Jeffrey Mathews Associate Director of Bands and Associate Professor of Music  Northwestern State University  in  Natchitoches  LA Air Force Bands in the 21st Century : A New Mission in the Global War on Terror .
 city of headquarters: Northwestern State University, Natchitoches
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:  Northwestern State University, Natchitoches 
Answer:
 city of headquarters: Northwestern State University, Natchitoches