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

Example Input: When I purchased this product, I thought I was getting a good deal because of the cheaper price. However, once I received it, I knew I had made a mistake. I've been using this product for several years now, and I knew just by looking at this one that it wasn't right. The texture was incredibly thin, and the color was much lighter -- something that could only leave me to believe that maybe water had been added to it.Lesson learned -- spend the extra money -- you're paying for quality!
Example Output: Negative

Example Input: I enjoy this book very much. It is a timely classic with which I am happy to now have my own copy.
Example Output: Positive

Example Input: C'mon. We've all read this stuff before: E.Lynn Harris. Bebe Moore Campbell. Terry McMillan. Ad Nauseum. And most have done it better. I don't know any black people who talk or act like these characters. They were like cardboard cartoon people. For all of her talk about "cutting off" her hair, Venus still was NOT NAPPY!! She had finely textured hair, for goodness sakes! She was even compared to Jada Pinkett by one of her close friends! The title was a ..., and I felt cheated as I read the book. As a matter of fact, I skipped to the end. Don't buy it, rent it from the library if you must.
Example Output:
Negative