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Cuevas joined the producer Humberto Gatica to record the anthem of Violeta Parra with a group of international artists to come to the aid of earthquake victims in Chile .
 Cuevas, Humberto Gatica, Violeta Parra, Chile
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cuevas, Humberto Gatica, Violeta Parra, Chile