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: Used it in birdbath to keep water from being stagnant- put it in my dog's swimming pool - it's fun to watch and turns off when water dries out. I recommend this!
Example Output: positive

Example Input: My brother had these and they really do keep the lemons and purchased the lime as well longer and juicy. Plus easy to display for drinks. Great product.
Example Output: positive

Example Input: I did not like it at all! I feel like this is counterfeit, it burned my lips. I have the same exact product which is the reason why I purchased this one and I did not feel my lips burning with my previous one.
Example Output:
negative