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: Just opened my plastic package because hard to see if center pin was copper as pictured in ad.. sadly it was not. By the way, do not tear open your package because it states on the package,"No returns if bag is open" what a waste, I should have just driven to an autoparts store.
Example Output: negative

Example Input: This is easy to use and comfortable. The heat doesn’t last that long and the scented smell is so terrible that I can’t even keep the eye mask on that long.
Example Output: negative

Example Input: I was using the product for bread dough starter, now that the starter is active and useable I am using it for rising dough. It is easy to see how much the dough has risen because it is see through and the container has measurements on it. The lid fits tight and it is durable. I am happy with my purchase I will likely buy a second for other bread dough I make at the same time.
Example Output:
positive