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Shortly before Warhol 's death , doctors expected Warhol to survive the surgery , though a re-evaluation of the case about thirty years after his death showed many indications that Warhol 's surgery was in fact riskier than originally thought .
 Warhol, Warhol, Warhol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Warhol, Warhol, Warhol