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

Ex Input:
I purchased this airbed because I wanted to sleep in the same room as my newborn. Yes, I'm one of those paranoid new moms. This bed goes above and beyond. I wanted to buy the AeroBed first because I'm one of those people who hates to buy cheaper items because they usually break or whatever. I'm pretty much a sucker for the theory that expensive = quality. However, I went with my gut and decided to try this airbed having never heard of the company before. Listen to your gut! It inflates in 3 minutes and deflates in about 3 minutes. If you want it to be more firm & allow the air to settle in better, you should leave it in there for about 7-10min. Not a big deal at all. Go do something in another room while you're inflating it. This thing can also handle a lot of weight. When I'm sleeping on the airbed, my husband comes in the room to tell me he wants to sleep in this bed too because it's so comfy. Great Buy!

Ex Output:
Positive


Ex Input:
SELLER DOESN'T RESPOND BACK EITHER. WARNING!!! WARNING!!! WARNING!!! DON'T BUY HERE!!!! CHEAP CHINAM JUNK!!! WARNING!!! WARNING!!!!DON'T BUY HERE. CHEAP BOLT ON SET UP......TWISTED OFF AND BROKE THE FIRST TIME. LUCKY IT DIDN'T SMASH A FOOT OR FINGERS. LAWSUIT TIME IF IT DID.WARNING!!!! WARNING!!! WARNING!!!! DON'T BUY HERE. CHEAP CHINA JUNK!!!!!

Ex Output:
Negative


Ex Input:
This is one of the worst books ever. It tries to capitalize on the Chicken Soup for the Soul-type, void of any substance stories. This was not written by the author and takes advantage of people around her by publishing stories from them. With no new insight, Samira, a strictly amateur writer, doesn't contribute anything. Fortunately, it's by a vanity publisher and the only people who buy it are her friends (who posted here from "Grand Blanc" and "Michigan" because Samira asked them to) and a few people who found it online. Please people, avoid this book, buy something that will be worth your time and money.

Ex Output:

Negative