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]: ...unless you want little wads of yarn roving floating in your fish tank or terrarium. I received a little cup of small, damp, grayish-green balls, but being new to marimos I didn't really know what to look for. Over the course of a week or so in the tank they slowly became more pale and gray as if the color was fading out of it like a dye, and I did a bit of research and realized I'd been swindled. I dissected one and I'm fairly certain it wasn't even any sort of living plant matter, it seriously just looked like a balled up piece of synthetic fibers. They went in the trash and I found some actual lush, green marimos.
[A]: negative


[Q]: I purchased 2 of these lights and was surprised at how bright they are. Very convenient for places you can't or don't want to run hardwired electricity. They would also be great for a camping trip. I will definitely be buying more.
[A]: positive


[Q]: Do not buy these! Leaves a blue stain on the inside of the bowl at the top of the water and has a strong smell. Wish I didn't buy these in bulk. I'll give them away free if I could.
[A]:
negative