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

Ex Input:
This is a wonderfully entertaining, well-written and thought provoking story. The author did a superb job of developing character and plot, leaving the reader with a lust for the story to continue.

Ex Output:
Positive


Ex Input:
I ordered 3 of these. They are sturdy, comfortable, and stay inflated. The electric motor in each easily and quickly inflates and (almost) deflates them. The height also makes them feel more like a real bed.However, if you want to completely deflate them for storage, that can be a real trick. I could never deflate any of them completely, so in frustration I cut one open to see what the problem is. A design flaw allows an internal plastic flap to cover the deflation port when they are almost empty. The more you try to vacuum or squeeze out air, the tighter the flap seals the port, sealing in the last bit of air.Now I know, and there's nothing I can do about it, but I feel better after attacking one with scissors...

Ex Output:
Negative


Ex Input:
Bought this as a replacement for my ibook charger. Its about $40 cheaper than the apple proprietary version and does the same exact thing -> power my laptop. Its not as fancy looking, however, and the cord is kind of stiff. But if you dont care about that sort of stuff then there is no reason to buy the overpriced apple version.

Ex Output:

Positive