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.

...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.
negative

It's a really pretty cover and the fact that they showed what each color phone looked like under the design really helped me choose the perfect cover. It's textured on back, so it helps grip the phone and I'm very pleased with it.
positive

I've been drinking these for years. When they changed the formula, it ADDED SUGAR, tastes WORSE, AND often LEAKS. Totally unacceptable, especially for how expensive these are. I've called Gevalia numerous times to try and explain why then need to go back. Seems EVERYONE liked the old formula better. And it was healthier for you. FAIL!

negative