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what mystery films directed by guillermo del toro are really good
 mystery, guillermo del toro, really good
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: genre, year, plot, average ratings, actor, title, song, character, rating, review, director, trailer 
Text: {0} 
Answer:
 mystery, guillermo del toro, really good