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

Example Input: I was impressed with speed of delivery, condition of product & quality of packaging for the product.The soundtrack itself is wonderful as I saw the original movie when it came out and feel Madonna & Antonio deserved a better review than they got for their performances.
Example Output: Positive

Example Input: Now my daughter will not stop aggravating me because we cannot download the pictures off of the dran thing and wants a new camera, so now, I have not only wasted my money, but I have to buy her a more expensive camera that will work that she will break or lose.Thanks so much Vivitar!
Example Output: Negative

Example Input: We bought this item twice. The first time, it was defective and wouldn't work (it made a dull sound all the time, and no additional sound at all when put in contact with water, as per the test described on the instructions sheet), so we returned it to Amazon (thanks for your excellent returns policy!) for an exchange. When the 2nd item proved just as defective, we got our money back. Don't waste your money on this junk -- buy something more expensive and substantial.
Example Output:
Negative