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U.S. Congressman James Clyburn recommended Greene drop out of the race or he would face a federal investigation into his candidacy – even as he faces a felony obscenity charge in Richland County from November 2009 .
 James Clyburn, Greene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 James Clyburn, Greene