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: Very frustrated. Opened upon receiving so that it can expand. It’s been 6 hours and still hard as a rock and curled up. Wondering how long it’s going to take to expand to isn’t normal shape.
Example Output: negative

Example Input: As soon as I opened the sealed package, the items felt damp to the touch and I was hit with a moldy smell. For an item that is supposed to clean the air, I felt it needed to be cleaned itself. I have no idea how it was packaged or why it would be damp but clearly it was not dry before packaging. Very disappointed for something with such great reviews.
Example Output: negative

Example Input: I used this product once fro my job conference. last night my niece wants to borrow it for her class presentation o record herself and found it having malfunction issues. battery was changed to and its turning of by itself.
Example Output:
negative