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

Example Input: When I first heard Ra's "From Zero" I was in awe. A band that used cool effects, Egyptian scales, and was moderately heavy--the perfect mix for me. Then, Duality came out.Duality demonstrates a lack of creativity that was once there in Ra. I wouldn't say they evolved, I'd say they devoled. They still use effects, but rarely and they don't have as big of an impact. On top of that they hardly sound Egyption on the album. As for this album, Ra sounds more like other bands, but they are still distinct. I just wish they went in a different direction.I do want to say that their are some really awesome songs like Fallen Angels, Undertaken, and Taken. The other tracks are bad either, it's just that I expected a whole lot more.
Example Output: Negative

Example Input: This is nothing new from Gail Howard, or at all. These wheeling systems can be worked out mathematically, without paying for this book. There are also lots of websites that offer number generators and wheeling system explanations for free. If you want it all spelled out for you then buy this book, but if you are willing to do a little mathematical work check out lottery information website like [...].
Example Output: Negative

Example Input: When trying to install the products attachment brackets to the boat railing three of the eight screws supplied sheared off. When attempting to attach the cover over the frame, I discovered one of the velcro pieces sewn into the cover was coming unraveled. The center support pole that installs across the top and runs from front to back is supposed to have a pocket for the pole to fit into sewn into the cover at each end; mine only had one pocket making the center support useless. Got in touch with Taylor Made customer service to resolve the issue. They arranged for pick up of the defective product and said a new one would be sent right out to replace it....... over three weeks later and I still haven't received it. I think it will serve its purpose once I ever get the darn thing and it's not defective !
Example Output:
Negative