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 was installing these chips in a G4 Sawtooth macintosh computer and the chips did not work. I had kernel panics that eventually left the operating system unusable. The hard drive had to be reformatted and the OS re-installed. A great headache and PITA. I need to return these memory modules, how would I do that.best regards,vilppu
Example Output: Negative

Example Input: Everything the other reviews say about this product is largely true: the cord is thicker and more durable than the Apple adapter, the brick doesn't get as unnervingly hot, you can deal with the fact that it's not powerful enough to be used as a power source... but one day it just mysteriously stops working. I bought this to replace my broken Apple adapter and was generally very pleased with it, but about a month later I went to plug it in one day and it just wouldn't work. My laptop showed no connectivity, the little charge light on the brick didn't go on, and after tinkering with the thing at length I couldn't get anything to change. If you want a cheap, temporary replacement charger, I guess this would be fine. But for anything long-term it might just be worth shelling out $80 for something that at least lasts a year or two.
Example Output:
Negative