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: You can't like electric guitar and not love this CD. It's smooth, jazzy, and bluesy all at the same time. If you liked the music in the film "Bull Durham" you'll be in heaven.
Solution:
Positive