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Gerrell Gaddis ( born October 18 , 1974 ) , known by his stage name Rell , is an American R&B singer .
 Gerrell Gaddis
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gerrell Gaddis