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

Example Input: This book contains such advise as writing down personal affirmations which you will repeat to yourself at the beginning of each day:I am calm, prepared, and entertaining.I am fit and beautiful.I am humble, patient, and compassionate.I am enough, just the way I am.If this kind of advise is your cup of tea, then this is your kind of book.
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 was sent to me by mistake. So free it was but not a bargain.I dislike this imported 2 disc, 40 tract album very much. The is from the 30's I would think. With high quality headphones this stuff is to hard to listen too.The sound is very thin and hissy. Fidelity is low and overall listen-ability is very weak. This big band stuff without the big band sound. Song after song, it all sound the same, very boring material with sound to match. Just a throw-away.
Example Output:
Negative