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The  22nd Marine Expeditionary Unit  ( 22nd  MEU  ) is one of seven Marine Expeditionary Units currently in existence in the United States Marine Corps .
 alternate names: 22nd Marine Expeditionary Unit, MEU
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:  22nd Marine Expeditionary Unit, MEU 
Answer:
 alternate names: 22nd Marine Expeditionary Unit, MEU