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

Example Input: Here are the problems with using this in the classroom:1. The lines are not numbered, so students will have to number the lines as homework for every scene, or else you'll waste a lot of class time doing this.2. The paper quality is terrible for annotating: Mechanical pencil lead gets caught on the fibers, and any ink but ballpoint pens spreads out.3. Very few terms are annotated in the book, so you'll need to keep your own glossary inside the front cover because there's very little space to annotate.4. Prestwick House has an annotated copy with line numbers, plenty of space in the margins, high-quality paper, scene-by-scene glossary in the back, reader's tips for reading Shakespeare, and extra textbook-type help. Guess how much: 99 cents!
Example Output: Negative

Example Input: While Jawbone make a great blue tooth ear bud, it doesn't interface with ears well. The Jabra solution doesn't work. It doesn't hold the ear bud well allowing it to fall off at the most inconvieniant times. It also hurts your ear and is difficult to insert. It's not the answer, friends.
Example Output: Negative

Example Input: This is new technology, what can we say? It might have its occasional bugs (not being able to get songs in a few days) but these are things that can be overlooked. Its new for crying out loud! The best way to get these bugs ironed out is by supporting the product and giving Sony feedback. The interface of this product is excellent and simple...a button and a tiny LCD screen. If you don't know how to use this then...technology isn't your buddy I guess. As far as coverage and the speed in which certain radio stations provide feedback is the sole responsiblity of that station for the most part (most stations take 24 hours to get a song. others might take maybe 10 minutes or so), and NPR support would be very much appreciated. Not every location on the surface of the earth is supported (yet) but as far as I'm concerned an e-mail request to Sony could help to do the trick. Overall, the product is great and it is a great Sony investment.
Example Output:
Positive