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Massachusetts Mutual Life Insurance Company 's OppenheimerFunds Inc unit paid $ 140 million to purchase Tremont from Manzke in 2001 .
 Massachusetts Mutual Life Insurance Company, OppenheimerFunds
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Massachusetts Mutual Life Insurance Company, OppenheimerFunds