Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example is below.
Q: I've read this book with much expectation, it was very boring all through out the book
A: Negative
Rationale: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: Enjoyed it immensely. The sound is best in stereo. The DTS and 5.1 mix are both done poorly imo. But, the stereo sound is very good!
A:
Positive