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

Input: Consider 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...

Output: Negative


Input: Consider Input: The bed needs air refilling more often than I thought it would- every 3 days at the most. So much so that if I didn't pump it, the bed would all be like a water bed with "jelly-like" feeling. To lessen this effect I situated it in a corner of the room against the walls. Further more, what surprised me was the round water condensation on the bed sheet just underneath my (head) pillow in the morning. But what confuses me is that in the evening the bed feels cold (or the air inside feels cold).What I like about it though is that the pump works real fast in inflating- although it is loud for an evening activity.

Output: Negative


Input: Consider Input: The Plug-In PET is not coming to America. The season of NT Warrior is already over, Axess is airing now. They would have brought the Plug-In to America before the Adanced PET. It wouldn't make sense to make the Advanced PET while NT Warrior is showing, then make the Plug-In while Axess is.The Plug-In is extremely rare. I have one, don't buy it. The battle system is terrible, and the battery dosn't last that long.Either buy this PET, or buy the Progress. I have both. The Progress is the best out of all...


Output: Positive