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 clubs might be great, but we will never know! We ordered the MEN's 16 piece Callaway set for our son for Christmas, but received the WOMEN's 11 piece set in error. We sent it back to get the correct MENS set, and within two days we received the replaced package. Only to open it and find the same WOMEN's 11 piece set AGAIN! We have sent it back again for a replacement ... hopefully the 3rd time is a charm!!
Example Output: negative

Example Input: I haven't used these products yet, the raincoat used before was very heavy. It's very inconvenient to put on. So I tried this raincoat, it feels great to put on. There is no sense of obstructing action. When I opened the package, I found a variety of raincoats in different colors, each of us can choose the color we like. I think we can take it with us on the field trip. Because it was raining hard days ago, it was I who carried a raincoat like this I won't get caught in the rain, I don't even feel it. It's a great feeling. A raincoat is long enough, it won't get your knees wet. That's not what other raincoats can do. So I suggest you take a raincoat like this. It won't take up your space and it will bring you convenience.
Example Output: positive

Example Input: I can be very forgetful when it comes to my keys and the tile helps me track them down and prevents me from having to retrace my steps which is extremely convenient.
Example Output:
positive