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:
This is the first romance novel I've been able to read through from beginning to end in a long time. Nothing unusual about the story. Just light, breezy read on a Sunday afternoon.And both lead characters were likeable. Something that's harder and harder to find in the genre, IMHO.
Answer:
Positive