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

Example Input: First of all, let me say that I am a huge Wes fan! Not only is he one of my favorite guitarists, but one of my favorite composers as well. Everything Wes played was genius, including all the music on this CD. However, this release is not worth buying.This CD follows in the long tradition of Wes bootlegs of the March 27, 1965 concert in Paris. The songs are mistitled, the sound quality is poor; the personal are not listed, the date is not listed, the venue is not listed, and the booklet is non-informative. To make matters worse the song order has been rearranged to an awful order!If you are interested in obtaining a good version of this concert buy "Quintessential Wes" by Varese Records.
Example Output: Negative

Example Input: My husband and I were not able to attend a birthing class, so the doctor suggested we rent/buy a video. We decided on this one, and although the 'teacher' was a bit corny it was helpful. I especially liked that you could fast forward and skip parts! All in all it was a worthwhile purchase and proved helpful to us both.
Example Output: Positive

Example Input: We purchased the Intex Inflatable twin bed with built in pump. After a few uses it started leaking air. By the middle of the night, it was down to about half full. So, being we are out of the 30 day return time frame, we are just out.If you buy this, good luck.
Example Output:
Negative