1173
He often worked closely with  Andrew Bonar Law  another native of New Brunswick the only Canadian to be Prime Minister of the  United Kingdom  .
 Andrew Bonar Law, United Kingdom
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Andrew Bonar Law, United Kingdom