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

Example Input: Tomb Raider: The Angel of Darkness is one of my favorites. The plot is very interesting, the graphics are good (but kind of shakey, at least on my computer), and it's pretty cool to be able to play another character (although Lara is always the best). The environment is very dark and grimacing though, and I find that if I play the game to much, I get a little depressed. It's still one of the best, though, and an awesome addition to the Tomb Raider series.
Example Output: Positive

Example Input: I picked up Hard Times preparing to enjoy it since Charles Dickens is my favorite author. While not going so far to say that I was disappointed,I will say that it was the first Charles Dickens novel that I almost felt like not finishing. Not only is the plot rather humorless, but the characters are charmless and almost uninteresting. If it hadnt been written by Dickens then I may have liked it better but as it was it did not have any of Dickens usual charm and humor.
Example Output: Negative

Example Input: We have been giving this to our two golden retriever puppies (started at 6 1/2 mos old) for almost two months now at the recommendation of our homeopathic vet. WOW - what a great product! Their coats are like satin - among all the other benefits it provides (joints, organs, skin, etc!) and they love it! The pump is great and makes it really east to add to each meal; really good price too.
Example Output:
Positive