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:
I watched the movie before reading the book. The movie was so bad that I felt compelled to read the book to see if it could redeem itself. The characters as depicted in the movie were very one dimensional and I just didn't care about them or what happened to them. The book tells a totally different story than is depicted in the movie and is SO MUCH BETTER.
Answer:
Negative