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.
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Question: This plaque is a very thin piece of cheap wood. The lettering is sometimes hard to read. Very disappointing and too embarrassing to give as the gift I had planned.

Answer: negative

Question: I have very hard water where I live. I use this once or twice a week and it really helps remove the build up on my hair. I'll definitely keep using this.

Answer: positive

Question: Good reflectivity. Good price. I bought this item for early morning runs. When clad in this I feel way more comfortable running through my suburban roads. I've used this item a couple weeks and it looks that it will hold up for a very long time. I also strap on the 2 included bracelets around my ankles to show motorists movement, as I think a stagnant floating vest may not catch there eye. If you run in the dark do yourself and everyone around you a favor and wear reflective clothing. This small fee could save your life.

Answer:
positive