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At the age of 14 Brett began teaching himself guitar and soon came to the attention of well known guitar legend Tommy Emmanuel CGP who took Brett to America to play at the Chet Atkins Appreciation Society Convention .
 Brett, Tommy Emmanuel, Brett, Chet Atkins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Brett, Tommy Emmanuel, Brett, Chet Atkins