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

Example Input: This was a very good, fun light read. Very much enjoyed it. Am looking forward to reading more of her books!
Example Output: Positive

Example Input: I did not really care for this book. I found the plot messy and muddled, with many clumsy devices and scenes that felt forced (the climax, in particular, seemed very rushed, cinematically speaking). The characters, for the most part, were thin - and perhaps the author reached too far in casting the reference-net. I wanted to like it (I very much enjoyed Alan Moore's tales of the Extraordinary Gentlemen's League)... A very intriguing idea though (I give the acorn a golden prize but the oak grew sickly)... Maybe it is your thing; it was not mine.
Example Output: Negative

Example Input: This book is getting mixed reviews. It seems like friends of the author say its great. Those who tried to actually use the book are disappointed that everything is so out of date. This edition was not updated since the first edition and is now really out of date. Things change, but sloppy research is always out of style.
Example Output:
Negative