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: Bought this after reading good reviews. But it's not water proof at all. If my son has even a little accident in bed, it goes straight to mattress. I don't see a point in having this. So I have to purchase another one.

Answer: negative

Question: This small vacuum cleaner is really powerful enough to clean the dirt / food particles in car. Cleans well even in the small gaps between seats. The long pipe accessory makes it easy to clean below seats. This works well even without the car engine off in my crossover. And the long cable helps clean inside as well as outside the car. The filter is easy to remove and clean. A must have item.

Answer: positive

Question: Started working from home in a call center type of work. Unfortunately it requires sitting at the computer for more hours than I'm used to so my rump/tail bone would start hurting. Since getting this I can comfortably sit thru linger shifts and even elevate my feet without getting tailbone pain.

Answer:
positive