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Perry graduated with his BS in Biology and a minor in Chemistry from  Northern Arizona University  in  Flagstaff  Arizona in December 2008 .
 city of headquarters: Northern Arizona University, Flagstaff
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:  Northern Arizona University, Flagstaff 
Answer:
 city of headquarters: Northern Arizona University, Flagstaff