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

Example Input: I bought this from the same co. before christmas and was stunned that the price had doubled. On the page the price was not clear!
Example Output: Negative

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: great movie!!! cage is a great druggie i mean for being a cop. what a way to gain trust from the bad folk's.
Example Output:
Positive