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

Example Input: Boy, what a lousy Moby Dick! Patrick Stewart is terrific. That is it, period. The effects with the whale are fine, but when the cabin boy is drowning, the water is only up to his chest. When will the REAL Moby Dick be on DVD? Now that the Coen Brothers have paid tribute with the ending of "Oh Brother", one can get one's hopes up again. Save your money for that.
Example Output: Negative

Example Input: I received the product in a timely manner. It was as advertised. I have used it a number of times and it works well although I haven't gotten the results from it I had hoped for. No fault of the seller or the product though.
Example Output: Positive

Example Input: I take back my previous comments as now this adapter is dead, and MUCH faster than my original one. I await Macally's response to my request for a new one.
Example Output:
Negative