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.

This mask smells so bad like chemicals that I am not sure my son can wear it. We are trying to soak it in soap and water, but this is very disappointing. I would not recommend.
negative

The Roomba 980 performs as stated. Excellent pick up and battery life. The WiFi connectivity is handy for as needed cleaning between scheduled times. We are very pleased with the unit.
positive

I bought two of these alarm clocks for my sons' bedrooms. Like other reviews, these clocks do not keep accurate time in either room. The only purpose they serve at this point is to charge their cell phones overnight. This product is a waste of money and I highly discourage consumers to purchase it.

negative