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

Example 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.
Example Output: Positive

Example Input: [...]I would not recommend this book. Russell does make some remarkable findings, however, his theology is corrupt and he is a party to a cult.
Example Output: Negative

Example Input: The rollator might have been en excellent one, and was keenly waited for.However, 2 days past it's expected latest arrival time, it had not arrived. The company that was supposed to send it admitted that they had printed the shipping label, notified Amazon and us that it had been shipped, but had not done so.They offered a pink one which was absolutely not suitable for the male user, so I demanded the money back, which they promptly did. I was underwhelmed by the professionalism of that company, and notified Amazon.com about it.
Example Output:
Negative