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

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
If you've seen the original Rollerball staring James Caan, then you'll probably want to give this remake a miss. It is no longer set in a future controlled by corporations, it is set in the near present which is pretty much like reality. The hero doesn't hold a candle to James Caan.It does have plenty of action, if mindless action is to your taste. The rollerball arena is poorly designed which makes following the action difficult at times. The villiam is just another greedy businessman/crook with nothing to make him stand out from a 1000 other businessman/crooks in other movies.My adive? Save your money and get a copy of the original Rollerball.
Answer:
Negative