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

Ex Input:
I am a complete Sudoku addict and am very disappointed with this book. The only reason I bought it was because I was desperate for more puzzles and it was the only one available at the store I was in. First of all, it costs $4.99 which to me, is way too much money when you can get a Kappa book for $1.99 which has better puzzles. Another thing that bugs me about this book is that some of the answer keys in the back don't match the corresponding puzzles. When I get to the difficult/Very Challenging ones in the back, sometimes I need a little help! But unfortunately, this book has quite a few errors in the answer section so when I've hit a dead end, it's over.I would recommend Kappa books from your local supermarket. This simply costs too much money for not mush quality.

Ex Output:
Negative


Ex Input:
Felt great until it dug into my waist while sitting causing damage to my surgical site. Now I'm in pain with and without it on.

Ex Output:
Negative


Ex Input:
very disappointing. The plot for sam was really lame, the woman they got for his fiance was the worst actress ive ever seen. pretty sure its because she is a model and doesnt know the first thing about acting. the movie was ok as an action movie but if you buy this expecting something on par with the first two movies you will be sadly disappointed.

Ex Output:

Negative