5345
He  returned to  Canada  suffering shell-shock and was engaged as an Army instructor for American officers at Yale University .
 countries of residence: He, Canada
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:  He, Canada 
Answer:
 countries of residence: He, Canada