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:
David Weber uses a trick in this book that I think is cheating at writing, and not in a good way. One chapter ends with the main characters in dire straits, and then the next one starts with them having overcome the problem without any explanation. Did he get tired of writing or is he just inept?Otherwise I'd say that I would recommend the book to readers age 12-16. To an adult the characters seems a trifle "fantastic".
Answer:
Negative