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]: Well this stuff was crumbly and would not stick to itself. It was like wat sand. I couldn't knead it or work with it at all. Added water and pushed it in the mold and it cracked in thousands of pieces. Worthless stuff don't buy it.
[A]: negative

[Q]: Works great! You can use the smart life app to schedule lights to turn on at sunset off at sunrise. I even use it to turn on heat lamp for my animals when the temperature drops below 40 degrees and it turns off at 41 degrees
[A]: positive

[Q]: I use this every night and sleep so much better without ambient night light from all the electronics in the bedroom and the street lights. Best part is, there's no velcro to scratch my bald head.
[A]:
positive