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The film is a continuation of the Professor Layton series and takes place between the events of Professor Layton and the Last Specter and Professor Layton and the Miracle Mask , as a flashback story three years before the events of Professor Layton and the Diabolical Box .
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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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