12906
SingTel will sell the multimedia gadget in Singapore Bharti Airtel Ltd. in India Globe Telecom Inc. in the Philippines and  Optus  in  Australia  the companies said in a brief joint statement without giving details .
 country of headquarters: Optus, Australia
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:  Optus, Australia 
Answer:
 country of headquarters: Optus, Australia