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:
I recommend this book as kindling for a fire. It is the worst book that could have possibly been written. If you want to read this, jump off the nearest bridge or very tall building (without a parachute). That's probably the most similar experience to reading this book. Thank you, and have a good day.
Answer:
Negative