11475
Mackay Airport is used by all four major airlines operating in Australia :  Qantas  subsidiaries QantasLink and Jetstar Virgin  Australia  and Tiger Airways Australia .
 country of headquarters: Qantas, Australia
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: Qantas, Australia