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 contrived question and answer format didn't bother me too much, and actually covered a lot of ground in an engaging way. I liked this book.
A:
Positive