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

Example Input: I guess I didn't find this CD memorable, as I couldn't even remember what it sounded like. There were no particular pieces that jumped out at me and cried "Dance to me." Overall I was not that impressed.
Example Output: Negative

Example Input: I've bought several air beds from various manufacturers. I bought one identical to this one 1 1/2 years ago. It was comfortable but lost air after 3 months. I justified this as the user may have not taken care. However, I now believe its the brand. This one would not inflate at all. I will not buy this brand again. I've had great life from a better brands.
Example Output: Negative

Example Input: I first read this book in 1962. Today, I can remember the characters as if I had read the book yesterday. A beautiful love story written in a gentler time. A story that will tear at your heart and conscience. Very moving!
Example Output:
Positive