In this task, You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

Q: Bought this product as a gift and the first one didnt work - the lights wouldnt come on indicating charging. Completed my first Amazon return, and had a new one (that worked great!) before I could even get the broken one to the UPS store. Completely happy with the entire purchase (even the broken one because life happens and it was so simple to get corrected!)

A: positive
****
Q: When the ache/pain in my upper back won't stop, I always turn to this product. It takes away the pain almost immediately. It is adjustable and comfortable to wear. I love it!!

A: positive
****
Q: I bought this thing and waited for it to ship. I opened the box and what did I get? A piece of cardboard, the back of the package. Not even the plastic cover that goes over the product, just the back to it.

A:
negative
****