6749
Somon Air  also serves as the official carrier of President of the Republic of  Tajikistan  and other Tajikstan high-ranking officials .
 country of headquarters: Somon Air, Tajikistan
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 country of headquarters: Somon Air, Tajikistan