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

Example Input: This is a fantastic and near perfect game. The only minor imperfections are lack of some gameplay features that are added in the sequel. The characters are very interesting and unlike most games are not mere cliches to create gameplay. It does not have any fan service at all and is better because of it.
Example Output: Positive

Example Input: I've bought several air beds from various manufacturers. I bought one identical to this one 1 1/2 years ago. It was comfortable but lost air after 3 months. I justified this as the user may have not taken care. However, I now believe its the brand. This one would not inflate at all. I will not buy this brand again. I've had great life from a better brands.
Example Output: Negative

Example Input: For 36 years I have instructed a wide variety of novices, experts and "so-called" experts. This book will take you from nothing - to all you really need to know (unless you are into "one-upsmanship" or trying to prove something about your masculinity or lack of it). For those (who are using this forum to display their resumes) if you are insecure then you will take your stack of books and your ego and look for anything that might have been left out. You might even list all the books you have, but the truth is, if you are really good at real-life situations, whether actual military combat, law enforcement or the usual combat games, ....all the book-learning in the world is no replacement. This book is well worth what you pay for it, and that's the point of these reviews, not better-than-thou cynicism from would be intellectuals.
Example Output:
Positive