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

[Q]: I buy/view/listen to a lot of music video's (read, sorry night life) and this one was a disappointment. Sound varies too widely act to act. Couple of goosebump moments (I love the Mega-Guitars on Kansas City) but mostly a smorgas-bored of available talent putting in their charity work. Zero additives for the video freak and no real explanation of charitable intentions ever given. Borrow this from someone instead.
[A]: Negative

[Q]: I've only worn this for a day so far, but I love it! I still have a little bit of a tummy from the birth of my son 8 months ago. This really holds you in, its comfortable and I don't think it shows through your clothes! I highly recommend!!
[A]: Positive

[Q]: This is a classic book that I have always loved and now can read on my Kindle. Glad to see it free!
[A]:
Positive