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

Example Input: This was the biggest waste of money ever created. If you want to know the song that much, call the station and ask them, they don't mind, really.
Example Output: Negative

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: These boots have that classic hiking boot style to them. The NuBuck leather looks great and the boots are comfortable and seem well made. I'm not really a hiker. I just like to wear hiking boots in the winter and these are perfect so far. I wear them everyday and I like them so much, I was thinking of ordering another pair!
Example Output:
Positive