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

Ex Input:
This movie is just plain sad. In addition to mediocre acting, the special effects were just as bad. In one scene you could plainly see the safety wire connected to the motorcycle. Bad diologue and senseless nudity made the film even worse. The plot drug and the resolution could have been solved a little sooner than it did. They came up with a lame chase scene with an airplane cruising on the ground after a motorcycle. Maybe that was a last ditch effort to make the movie a little bit more exciting. The only slightly interesting character was played by LL Cool J. His on camera presence is always rather captivating to me. It also carried him through a poorly written character. Since most of the movie took place on the track, there was more of the game than I could really put up with. Avoid it.

Ex Output:
Negative

Ex Input:
My Nomad Jukebox Zen Xtra 40GB only worked for 6 months. I no longer have any sound and the battery doesn't charge. When I called customer service I was given the excuse that it wasn't supposed to be used in the gym. As you all know it is marketed to fulfill your portable music needs. If you can't use it in the gym then it is not truly portable. I know many people who use their ipods in the gym and have had no problems for years. This product has fallen far below my expectations. It is not worth the $300, not to mention the fact that it only has a 90 day warranty. Can you trust a product that is only guaranteed to work for 3 months? No.

Ex Output:
Negative

Ex Input:
Well, I am biased, as Warren Brandt was my paternal grandmother's brother. I knew him personally growing up and was lucky to inherit his passion and talent for art. This book is a limited edition, and is beautiful from the beginning, as it is bound in a slipcover and is large in size. As for Brandt's work, it ranges in medium from oil to ink to watercolor, pencil and photography. Each subject is captured in a unique way, and each work tells a story, simply by the subject's pose or by the medium used. If you are a modern American art collector, this book is a treasure.

Ex Output:
Positive