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

Example Input: This product requires a stereo player in which the balance is turned totally to the left. Most auto systems have that capability. However if you have Dolby or SurroundSound, it can be difficult (and maybe impossible) to play the cassette without hearing two recordings at the same time. Unfortunately neither the packaging nor the website will warn you of the problem. You therefore should think before buying. Once you have opened the packaging you may be unable to return the product.
Example Output: Negative

Example Input: You aren't saving any being this adapter. I purchased this for a 12" G4 Powerbook. The power it supplies goes on and off constantly. This can't be good for the computer. It certainly doesn't charge it. Don't waste your money on this Macally adapter. Try to find an original Apple adapter if you can.
Example Output: Negative

Example Input: Terry Pratchett's other books are a lot like well painted homes. There are several layers. "Small Gods" is like inviting over your friends to paint. There is one uneven coat of paint and they left masking tape on all of the edging in an unsuccessful attempt to miss it with their paintbrushes. The ending of the book (and middle and beginning too if truth be known) left me with the same vague feeling of dissatisfaction as when I realized that to get the place properly painted I would have to have another seperate group of friends and throw another 'paint party'.
Example Output:
Negative