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The Vietnam-Laos-Cambodia Economic Development Association said here on Monday that  Vietnam  will hold an international trade and investment fair Mekong 2009 in  Ho Chi Minh  City from Dec. 9 to 12 .
 countries of residence: Vietnam, Ho Chi Minh
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:  Vietnam, Ho Chi Minh 
Answer:
 countries of residence: Vietnam, Ho Chi Minh