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

Ex Input:
I bought these to help with what I've read, to get the Jawbone to fit better. These ear pieces were hard to get into the ear no matter what size I tried. For a wireless earpiece you want to be able to get it on and off your ear quick if you need to, and these prevent you from doing so.

Ex Output:
Negative


Ex Input:
I have just spent 5 minutes trying to get this damn printer to print an envelope without mangling it. Wonderful.

Ex Output:
Negative


Ex Input:
The book arrived in a little more time than I expected, but it was within the time frame indicated. However, I am happy with the book's condition. It's better that described. Great book and price.

Ex Output:

Positive