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

Example Input: I got this item within a few days of my purchase. It is exactly what I wanted -- I look a whole size smaller, instantly. I tried on the Squeem in a boutique and fell in love, but they were asking almost $200 for it! I highly recommend this item and the seller.
Example Output: Positive

Example Input: This thing is a major piece of junk. It doesn't stick to the wall like it claims. You have to stand to play with it (cause all the cool stuff is at the top), and the extension pieces constantly fall off. I actually screwed it to the wall, but that lasted a whole 10 minutes as it wouldn't stay screwed into the wall. Then the scenery kept falling. Save your money and buy the cool batmobile or something.
Example Output: Negative

Example Input: How nice. Tess is a totally unrealistic character-she has more sorrow in her life then most of us have in a century. This book is extremely sad, and I don't understand why it's a classic. Tess is very happy until her alchoholic dad discovers that they were a noble family, so, getting to big for his britches, he sends Tess over to another D'urberville family, which actually just adopted the name because they wanted to seem influential. That's when the trouble starts. Soon, Tess gives birth to a baby, and goes back home in disgrace. Then she meets another nice guy, who abandons her when he learns of her past. They author could have done with some happpy scenes...life's not all sadness!
Example Output:
Negative