Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: I have enjoyed a few books from this author, but this one, was one of my favorites. I could not put it down to see where the story line was going and I was not disappointed! Love the strong characters and the flow of the story.
Solution:
Positive