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

Ex 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.

Ex Output:
Positive

Ex Input:
This product does not work with my ibook G4. As stated by some earlier reviews by other customers, the charger toggles between charging and not charging. Occasionally, if it is left on, it will continuously charge. I thought about keeping it, but it is unreliable and there are other third party options for $10 more.This one is going back to Amazon.

Ex Output:
Negative

Ex Input:
I received my Hi-Tec Altitude boots and am very pleased. I had purchased a Hi-Tec product from a retailer some time ago and was pleased with the fit, in particular. The Altitudes are solidly made, fit very well, are comfortable and as waterproof as described. I have shopped extensively for waterproof boots for trekking through the rain, snow and slush of New York City. I walk 20-30 blocks a day in these and they perform very well. I have been unable to find a similar pair of boots at this price anywhere I have shopped. I recommend these highly.

Ex Output:
Positive