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This work led to RCA 's Caruso-A Legendary Performer that applied Stockham 's restoration techniques to acoustic recordings of opera great Enrico Caruso .
 RCA, Stockham, Enrico Caruso
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 RCA, Stockham, Enrico Caruso