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: I bought this for a lot more money at the Relax The Back store. Amazon has a much better price. I like the design of it but it has some flaws. The pillow case is hard to get onto the pillow and stretches taught right where I'd like to rest my head making it a bit uncomfortable. Also the lower "legs" of the product are much too firm to have between my knees. It raises my leg up too high and hurts my hip. I'm 5'7" so this isn't a problem of being too petite. A flat spot has formed within a few days where I have to lift it open to get in and out of bed. I still like it and haven't found anything comparable.
A:
Positive