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He then become piano professor at the  Kiev  Conservatory where he taught  Vladimir Horowitz  and was his only teacher from the years 1914 to 1919 ( Horowitz was 11 years old when he first entered Tarnowsky's class and 16 when he left to study with Felix Blumenfeld ) .
 cities of residence: Kiev, Vladimir Horowitz
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:  Kiev, Vladimir Horowitz 
Answer:
 cities of residence: Kiev, Vladimir Horowitz