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.

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.
negative

I absolutely like it The brain booster influences well on my alertness and memory. I feel much more clear after half an hour of taking them. I think that they even improve my critical thinking.
positive

This is a clean romance with some steamy kissing and a clean after implied intimacy moment. Amber has absolute confirmation that her barely-ex-live-in-boyfriend for the past year is an exhibit A, first class pig. Now, she gets to face her small town as the inspiration for her ex's novel, thanks to a televised public sales kick-off. Scott, her best friend, has expressed the desire for Amber to become more than his forever friend. Dang, he's hunky. Present to help Amber at every cross-road, Scott really is the best guy, ever. Amber, "also now known as Ember, in her Ex's novel," just has some hang-ups to resolve before she can really consider settling into her foundations and roots. Who is her father? It's always been just Amber and Gloria, her mother, but maybe her roots spread much further than she ever imagined. Maybe this small town is more entangled with her own life than she ever realized.

positive