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: My cats are indoor, but I keep the windows and doors open, so fleas do have the ability to get in the house. One of my cats was starting to show symptoms of having fleas, and I opted to try this vs a visit to the vet to tell me he has fleas. Did some research, and gave this a try. I'm still on the first application, but flea issue has subsided. Also, not as smelly or greasy as other flea medicines.
Example Output: positive

Example Input: At first the fan was great, very quiet. we have had it for just over a year now. recently two of the three fans quit working. we dont use it much so we were surprised to see it acting up. We also never received a remote control as advertised
Example Output: negative

Example Input: We ordered this and it has caused our pool to get algae. It's not filtering our water and when we went to set return it was no longer available. I would not purchase from this provider again.
Example Output:
negative