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 thought the impeller was broken so I purchased a new one and unfortunately learned that it is the filter itself that is no longer able to pump water. I bought this a month ago. My turtles are not happy.
Example Output: negative

Example Input: Product is just as described. Needed a good brush for our family of 5’s many metal water bottles and plastic reusable straws. These brushes fit the bill perfectly. I like the silicone bottle brush the most.
Example Output: positive

Example Input: With the steps it is a must have for toddlers like mine. He is independent, but can't reach the toilet. This can be folded easily and without difficulty. It has two different toilet seat. There is a sofa and a hard one. The height can be easily adjusted and that is an awesome bonus. It doesn't slide off from the adult toilet either.
Example Output:
positive