71880
A canon of the show does exist , although " Treehouse of Horror " episodes and any fictional story told within the series are typically non-canon .
 Treehouse of Horror
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Treehouse of Horror