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Duff was a chorister in Christ Church Cathedral  Dublin  and studied at the  Royal Irish Academy of Music  under Charles Herbert Kitson .
 city of headquarters: Dublin, Royal Irish Academy of Music
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:  Dublin, Royal Irish Academy of Music 
Answer:
 city of headquarters: Dublin, Royal Irish Academy of Music