Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Magnum Opus

Not for the intellectually lazy. As P.L. Traver's the author of the Mary Poppin's books and a student of Mr. Gurdjieff's teachings described Beelzebub's Tales...as a "flying cathedral." It is a tour-de-force work of objective art. One thing that many reviewers fail to pick up on is how very funny this work is. Maybe it's simply one vast "shaggy dog" joke on us all- but again perhaps life itself is. I will give you a hint- approach it when you're ready as a fairy/folk/science fiction tale of the likes of 1,001 Arabian Nights meets Isaac Asimov. The rewards will equal the efforts put into a study of this book.