1756
Mayfield was then an aide to  Forbes Burnham  the President of  Guyana  between 1971 and 1974 .
 countries of residence: Forbes Burnham, Guyana
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:
 countries of residence: Forbes Burnham, Guyana