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:
Robert Cooke use humor throughout the book to help nonfinancial manager understand financial reports. The use of the Spouse House Firm throughout the book allows you to see the develop of financial reports as they apply to a small growing firm. Robert writes as he is right in front of you talking to someone he has known for a long time. He uses humor to help you understand the difficult concepts of the book. If you are looking to learn financial statements or just refresh your skills this is the book I recommend.
Answer:
Positive