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RSO Records founder Robert Stigwood left the label in 1981 and TK Records closed in the same year .
 RSO Records, Robert Stigwood, TK Records
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 RSO Records, Robert Stigwood, TK Records