11226
In 1919 Prime Minister Billy Hughes and former Prime Minister  Joseph Cook  took  Australia  's seat at the Versailles peace conference .
 employee of: Joseph Cook, Australia
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Joseph Cook, Australia 
Answer:
 employee of: Joseph Cook, Australia