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Hergé biographer Benoît Peeters praised the " gradual introduction into the story of a real dimension of evil " as being something particularly effective .
 Hergé, Benoît Peeters
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hergé, Benoît Peeters