3710
When  Laos  achieved independence the king of Luang Prabang  Sisavang Vong  became the head of state for the Kingdom of Laos .
 employee of: Laos, Sisavang Vong
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:  Laos, Sisavang Vong 
Answer:
 employee of: Laos, Sisavang Vong