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

Example Input: I didn't like some of the plot twist, of a former leader of the Autobots but other than that it was pretty good.
Example Output: Positive

Example Input: not bad but be warned you need to buy extra play-doh at local store before handing it to the kid's
Example Output: Positive

Example Input: In my opinion is one of the best introductory book in statistical thermodynamics. As a matter of fact, there are a lot of books and even good books treating this topic, but T.L. Hill has been able to introduce it in a simple and comprehensive way. In particular, I found particularly interesting his manner to treat the liquid state and the distribution functions (Part III). The last part is devoted to quantum statistics, it is an introduction but is well written and for a young student will be enlightening.
Example Output:
Positive