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

Ex Input:
I just got these stockings but the seller sent me a way smaller size (A-B) than I ordered, I e-mailed them telling them about the problem and will keep you dear buyer posted. I cannot tell you about anything about the quality or color because I have not opened the ones I received.

Ex Output:
Negative


Ex Input:
This product worked for 4-5 times and the rotation stopped working. Batteries run out or lose power after 3-4 uses. I would read reviews before buying another one... I am looking into the Hitachi wand massager now and I believe I will buy it since is a power operated toy and will never run out of power.Not impressed with this product.

Ex Output:
Negative


Ex Input:
This book will take you to another uncomfortable space where your believes and ideas of spirituality will change. Change is necessary if you want to know.

Ex Output:

Positive