instruction:
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.
question:
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!!
answer:
positive

question:
Didnt work at all. As soon as I began filling a tube it would shut off (overheating). Wasnt happy as I hade 7 tubes to blow up. Luckily I had a manual one.
answer:
negative

question:
Had for a while now, gotta say they're pretty bright and so far haven't had an issue with the exception of the high beam capability,the high beams are pretty much useless
answer:
positive