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

Example Input: The Sansa View 8GB I received was faulty. The battery would not hold a charge and/or the player would not turn on. This happened within hours of opening the player packaging and attempting an initial full-charge of the player's battery. The battery is only chargeable via USB and I tried using a PC and an AC to USB adapter to charge it. There is no hard reset button like I have seen on other players (namely Cowon brand players) so it could not simply be reset.I decided to return the product for a refund because it did not seem worth the trouble of waiting for a new (or repaired) player. I was not very impressed with the build quality of the player. It felt and looked very prone to scratching or other damage if not treated with extreme care. Furthermore, I found another player that suited my personal needs and desires better than the Sansa View.
Example Output: Negative

Example Input: There are people who will start reading this book then about 100 pages into it realize that it's going nowhere fast. Take my advice and keep reading. It gets much better, and more interesting. The ending is really good, and might have even upped this review a star.ac
Example Output: Positive

Example Input: The official Chrono Trigger OST has 3 discs. This version has some of the major tracks on it, the audio quality is good, but Caveat Emptor (buyer beware) this is a Chinese knock-off.Oh and if you buy the 3 disc version, make sure the cover does not have a green and red logo reading "FX", for this is also a counterfeit. The serial numbers on the real soundtrack CDs are PSCN-5021, PSCN-5022, and PSCN-5023.
Example Output:
Negative