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: The pillow case seam tore wide open after initial washing (before I even used the set!). I stitched back up and the rest of the set seems fine. Could just be an anomoly, but beware. But then again, they were only $20.
A:
Negative