7160
Richard Milhous Nixon ( January 9 1913 April 22 1994 ) was the 37th President of the  United States  serving from 1969 to 1974 when  he  became the only president to resign the office .
 countries of residence: United States, he
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: United States, he