Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Example Input: First of all, its boring. At the 30 minute mark I forgot what movie I was watching. And at two separate points in the film (I forget what points, in fact I seemed to lose all perspective on time) I literally went cross eyed. My right eye is still lingering in a lazy wobble at the moment. All I really do remember was rooting for Leonard Nimoy to destroy the planet and all the retarded humans that inhabit it.Things I learned from T3 - Michael Bay's film making talents could effectively be adapted into a new kind of non-surgical lobotomy procedure for mental patients. I think I dodged the bullet on permanent catatonia due to the fact that I spent half of the movie day dreaming about more exciting things in my life...like porn, and rearranging my sock drawer.
Example Output: Negative

Example Input: All of the good things said about "Helter Skelter" is true of the Kindle edition. What's more the Kindle edition has hyperlinked footnotes that actually work and take you instantly to Bugliosi's notes. But the trade-off is that with the Kindle edition THERE ARE NO PICTURES because of licensing issues. The print edition has lots of pictures, but many of the crime-scene photo's are censored.
Example Output: Positive

Example Input: This CD is great for some people, but I think a lot of other people are buying it who maybe shouldn't.For the Nirvana fanatic with money, get the full boxed set, you will probably find the DVD and the book to be worth the extra money, even if you don't listen to the added tracks.If you aren't a fanatic, stick with the albums. You will not like the low sound quality of the recordings.Now, for the Nirvana fanatic who's a bit short on cash, but absolutely has to have "Do Re Mi" as part of his collection, that's who this is for. "Do Re Mi" is an excellent track, one of Nirvana's best...so if you are a serious Nirvana fan, you DO need to have that one.
Example Output:
Positive