Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: I remember last year around Halloween I read an article about the best books to read for Halloween. Even the article's author conseded that this was a strange choice (it's not fiction) but had a good point. The first 10 pages of this book are truly terrifying and I guarantee you will be affected. It is also very hard because you can't help but feel desperate for the victims because terror was a part of what these killers meant to put into their last moments of life. And as most who know about this case it was one of the most horrible crime scenes to ever be discovered.
Solution: Positive