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

Ex Input:
Over the winter, i seem to gain alot of weight. As a high school quarterback, that is not acceptable. Last summer, i think i went from 160 to 150. That's my gross weight loss. I'm not even talking about how much fat i lost. I gained a good amount of muscle over the summer, so i probably lost over 15 lbs of fat. I got my six pack back, and life was great. After the season, i just quit, and now my six pack is back in the fridge. I'll probably order some up next week and start again. These are great, and the results are amazing.

Ex Output:
Positive

Ex Input:
Una excelente guia para todos aquellos que deseen concer mas aobre el vino y su mundo. De forma amena y sencilla explica los principales conceptos y orienta sobre temas basicos como la eleccion del vino corecto, principales tipos de vino, como comprar vino en restaurantes o tiendas, etc.

Ex Output:
Positive

Ex Input:
This seems like awfully shoddy science fiction to me. The old complaint about thin characterization isn't even the worst of it, nor are the crazy anachronisms [rampant cigar smoking, newspapers and casual misogyny]. But so much of this plot develops in the form of uninteresting local political maneuvers between slightly AynRandized heroes and buffooning villians, with no sense of place or grandeur whatsoever.The timeline of the novel is suddenly too breif after introducing the vast concept of a 40,000 year swing through history, and neither the future society Asimov has envisioned nor the apparant brilliance of the plan at the heart of this series are ever portrayed convincingly. Whatever powerful effect this book may have had in its day, it is bereft of it now.

Ex Output:
Negative