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The episode opens with a title card for an A. G. Nadir Documentary Film , " Changnesia " describing it as : The documentary opens with an interview with Chang , a recovering Changnesiac , who with the use of a mirror , estimates his current age to be 15 years old .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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