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

Example Input: The bed needs air refilling more often than I thought it would- every 3 days at the most. So much so that if I didn't pump it, the bed would all be like a water bed with "jelly-like" feeling. To lessen this effect I situated it in a corner of the room against the walls. Further more, what surprised me was the round water condensation on the bed sheet just underneath my (head) pillow in the morning. But what confuses me is that in the evening the bed feels cold (or the air inside feels cold).What I like about it though is that the pump works real fast in inflating- although it is loud for an evening activity.
Example Output: Negative

Example Input: Here are the rules: 1) Every time a character says or does something that's supposed to be funny but comes off completely lame instead-take a swig. 2) Every time the movie veers off into some completely random direction that has absolutely nothing what-so-ever to do with anything, take a swig. 3) Every time a transformer does a somersault or twist in the air in slow motion before attacking-take a swig. Follow these simple rules and you'll be bombed 15 minutes in. Seriously. While watching this movie I kept thinking how many millions of dollars were spent to provide us with idiotic jokes about red coffee cups in yellow rooms and effeminate assistants with Russian accents. Every time I see one of these movies, it saddens me. Given the insane visuals-tight, more serious stories could have really made this series into something amazing. Unfortunately that's not the case. At least there's no leg humping in this one. That's something I guess...
Example Output: Negative

Example Input: This book is nearly worthless. Large parts of it are just lists of organisms and there are frequent grammatical errors, typos, misspellings. It's clear it was written in a rush. The blurb on the back says "lavishly illustrated" which is a lie. All the illustrations, of which there are few, are not even B&W photos but line drawings, and not even very good ones at that. For example, The very first two, meant to illustrate two different organisms, are hard to tell apart. Save your money and buy something else.
Example Output:
Negative