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: Why did I buy this thing? Well, I saw a preview and it was great. Make no mistakes, is a good movie if you like machines beating up humans without the humans being make into jelly.The opening was the best in the world. If they had only kept it that way... But no. It desintegrated into pieces. The FXs were fabulous, but you can't make a whole movie out of that.Sorry fans. I was disappointed, but then I'm not a kid anymore, so that's probably the reason.
Solution:
Negative