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.

Ex Input:
Look out. I've used these for several years and the colors are no longer red, dark blue, yellow and dark purple. I received neon green, orange, aqua blue and fuchsia pink. Dark purple was okay for my little guy, but bright pink isn't going to work. Will either have to use one old car from last school year or order another set to have four. I put two under a yumbox and two on top in a lunchbox. Others are right about not staying cold long, but works great to keep non perishable items cold.

Ex Output:
positive

Ex Input:
Unfortunately they didn't work for me at all for they doesn't work with soft tissue. My skin tissue is too soft and it won't stay in place. So be careful unfortunately it won't work for everyone. The firmer your skin is the better it may work.

Ex Output:
negative

Ex Input:
A few details... the surface is not flat and you shouldnt expect to use paper and pen on top of this. The wood isn't high quality and will have blemishes. The wood isn't finished to protect from liquids. Assembly is fairly simple. The table is great size for a large couch.

Ex Output:
positive