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The latest diplomatic row between Nigeria 's military government and the club of Britain and its former colonies erupted over the terms of a visit by Commonwealth ministers to discuss Nigeria 's suspension .
 Nigeria, Commonwealth, Britain, Nigeria
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Nigeria, Commonwealth, Britain, Nigeria