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.

Example Input: 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.
Example Output: positive

Example Input: We generally like Aden and Anais products, but this fitted sheet doesn’t seem so fitted. I’m actually concerned it’s so loose that’s its unsafe. Defective or are they all like this?
Example Output: negative

Example Input: I decided to try this for my GERD after reading all those great reviews. I took two gels on an empty stomach as directed about 30 minutes before breakfast. After a few hours I became nauseous; this was followed by terrible flatulence, then diarrhea, then finally by the worst acid reflux I've suffered in over a decade. I have to wonder if this is even the same product reviewed! GARBAGE. Wish I could give minus-four stars.
Example Output:
negative