1764
Even after Barrientos ' death Guevara Arze continued as  Bolivia  's ambassador to the United Nations under Presidents  Luis Adolfo Siles Salinas  and Alfredo Ovando until 1970 .
 employee of: Bolivia, Luis Adolfo Siles Salinas
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:
 employee of: Bolivia, Luis Adolfo Siles Salinas