8404
Democratic  United States  Senator John F. Kennedy was elected to serve as the 35th President of the United States defeating the Republican nominee  Richard Nixon  who had served eight years preceding the election as Vice-President under Dwight D. Eisenhower .
 country of birth: United States, Richard Nixon
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:
 country of birth: United States, Richard Nixon