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: The brushes have good quality. They are soft, strong and easy to clean. It is good to have a lot of different brushes. As a beginner, I’m very happy with my purchase (I know they are all useful, I just need to learn how to use them all).
Example Output: positive

Example Input: I was skeptical that this would work to keep my hound dog quiet - but it works like a charm! Maybe because her nose is more sensitive?? We don't always put her bark collar on, but when we let her out at night when her barking would be more disturbing to neighbors, it works as described. Sometimes we only put the collar on and not activate it - that also works now that she associated the spray with the collar.
Example Output: positive

Example Input: Pretty disappointed when I unboxed it and the whole top part of the desk was covered in scratches. Looks like it was returned once already and sold as new. Will return...
Example Output:
negative