Given reviews from Amazon, classify those review based on their content into two classes: Negative or 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:
I tried to read this book when it first came out. I couldn'tfinish it. There seem to be at least three themes or storylines in here struggling to get out. One seems to be a reasonably good alternative-history novel based on the idea that the pirate subculture of the 1700s might have formed a revolutionary constitutional regime. Unfortunately, this quickly becomes mixed up with maundering about certain ancient "cities of the red night" and a very great deal of homosexual imagery and fantasy. As the book goes on (as far as I read it, anyway) the main storyline becomes increasingly lost. I ultimately found it both distasteful and so muddled as to not be worth it.

Ex Output:
Negative


Ex Input:
Have any of you not read the Manson File? It is obvious that you cannot control people with LSD, and it is obvious in the fact that Manson did not kill anyone.

Ex Output:

Negative