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

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:
All I have read about these was pretty much true. You can remove the rubber piece and press these over the part that it was attached to and they will stay, but they do come out with a little tug. A fine line of rubber cement will fix that though, and it peels off if necessary. But the great thing is that they will hold the Jabra in your ear without the ear loop. And that's huge, especially for someone like me with really weird shaped ears that nothing else [except an over the head headset] seemed to work. All in all worth the cost easily. I just wish you could order multiple pieces in one size only. If I lose the 1 that fist my ear I have to buy a 6 pack again just to get the one that I need.

Ex Output:
Positive

Ex Input:
I bought this book after i failed to get the score i needed in the TOEFL exam, and it helped me a lot at the second time I did the test. The best part about it is the CD-ROM that has 4 complete tests so you can practice just like if you were doing the real Computer Based TOEFL Test. It helps you to get in the mood of the test so you are prepared when you take the real test. There is only one thing that should be enhanced in this book. The review and hints at the "writing test part" are not enough. There should be more essay examples. Over all, this is the book you have to buy if you are planning to pay just for one book to prepare for the TOEFL

Ex Output:
Positive