4521
In 1916 an internal party row over conscription led to a split in the ALP and Archibald along with Prime Minister and Labor leader  Billy Hughes  left the ALP to form the  National Labor Party  .
 founded by: Billy Hughes, National Labor Party
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:
 founded by: Billy Hughes, National Labor Party