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

Example Input: Well, this was a perfect ending to a long busy day. I ordered the movie under the Tucson Sun to sit back and relax. It was very very enjoyable. I'm saying all this in a long-winded way because this review requires I write 20 words. This is actually kind of a pain because I am turned off about writing anything about these. But it was a fine purchase.
Example Output: Positive

Example Input: I just got these stockings but the seller sent me a way smaller size (A-B) than I ordered, I e-mailed them telling them about the problem and will keep you dear buyer posted. I cannot tell you about anything about the quality or color because I have not opened the ones I received.
Example Output: Negative

Example Input: Great spare power supply, the only con' is the excess of weat generated when you use it for a long time... but works great!
Example Output:
Positive