6839
The  Canadian Hockey League  ( CHL ) replaced the CAHA as the top junior league in  Canada  and subsequently the Memorial Cup become a round-robin series between the winners of the three CHL members leagues the Western Hockey League Ontario Hockey League and Quebec Major Junior Hockey League .
 country of headquarters: Canadian Hockey League, Canada
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 headquarters: Canadian Hockey League, Canada