9673
Triet who participated in revolutionary activities in the South of  Vietnam  between 1960 and 1970 held the post of secretary of the  Ho Chi Minh  Communist Youth Union in the 1975-1987 period deputy secretary and then secretary of the Party Committee of southern Song Be province from 1988 to 1996 .
 country of headquarters: 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:
 country of headquarters: Vietnam, Ho Chi Minh