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

Example Input: This book in the beginning was so slow that I finished a book twice it's length before I finished the first chapter of Tess of the D'Urdubervilles.
Example Output: Negative

Example Input: I love how this product makes me look in my clothes!!! its shapes me into a perfect hourglass! i dont know if the claim that it permanantley reduces your waist after 30 days is true because i havent had it that long. my only complaints are that it is a little too short, so i still have a small bulge over the top in vthe back and i think it may be stretching out as i wear it as oppossed to it shrinking me, but overall, it is the best shapewear i have ever purchased. i love it and would recommend it to anyone.
Example Output: Positive

Example Input: This boot fits to size and is comfortable. I would purchase again. I use to purchase boots from LL Bean.
Example Output:
Positive