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The 2012 13  Northern Football League  season ( known as the 2012 13 Ebac  Northern League  for sponsorship reasons ) is the 115th in the history of the Northern Football League a football competition in England .
 alternate names: Northern Football League, Northern League
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:  Northern Football League, Northern League 
Answer:
 alternate names: Northern Football League, Northern League