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In 2003 he returned to  Turkey  and was employed by  Turkish Airlines  in Istanbul becoming its executive vice president in charge of technical affairs .
 country of headquarters: Turkey, Turkish Airlines
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:  Turkey, Turkish Airlines 
Answer:
 country of headquarters: Turkey, Turkish Airlines