Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
THE SECRET BOOKS OF THE EGYPTIAN GNOSTICS by Jean Doresse is another great scholarly work free from "New Age" claptrap & commercialist distortion. The book is particularly relevant as French author Doresse was literally one of the first Westerners to actually see the original Nag Hammadi texts discovered in 1947. Although Doresse is a Christian proponent with a thinly veiled hostility to Gnostic tradition, he provides a wealth of reference material and, like Kurt Rudolph, indicates a possible interaction with Gnostic beliefs and Paganism--particularly in Alexandria, the motherland of Gnostic Paganism. This book is a MUST READ for any serious student of the origins and practices of Gnostic Philosophy.Gospel of Judas and Other Gnostic Secrets Revealed
Answer:
Positive