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'm sure I am one of a select few that do not appreciate a story that develops great characters and great sub-plots and then ends abruptly. It's almost as though the author got bored and quit - Zero resolution on anything. It doesn't leave me wanting more because I know the same feeling of "What the Hell?" will be waiting for me in the next book.
Answer:
Negative