13461
At the end of 2006 combined market capitalization of both  Ho Chi Minh  City Securities Trading Center and Hanoi Securities Trading Center is 14 billion US dollars or 22.7 % GDP of  Vietnam  .
 country of headquarters: Ho Chi Minh, Vietnam
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: Ho Chi Minh, Vietnam