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Tricks Mrs. Wormwood is hardly ever tricked by Matilda , judging by the fact that she is sometimes nice to Matilda , as opposed to Mr. Wormwood , who is never nice to Matilda ; therefore , he is always the primary victim of her tricks to get back at him .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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