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: This book is horrible and these reviews must be fake. There is literally 1.5 pages of actual speed reading instruction. The rest is tangential information that will not help you speed read at all. There are tons of grammatical and spelling mistakes. If you don’t believe me, waste your money and find out for yourself. This book should not be allowed to be sold on Amazon. Actually, it is inspiring to know that if this Hack of an author can publish this trash and make money, anyone can.
Example Output: negative

Example Input: I was taking this supplement to help me sleep. They were effective once I started taking two capsules just after supper. However, I did not sleep through the night. I am still trying different supplements
Example Output: positive

Example Input: It typically works for a few turns and then nothing comes out after that. I would shake it to try to get peppercorns to feed but that never really helped much. Only emptying it, clearing the neck and reloading it would get it working again for a few more turns. Seems like the neck is too narrow and gets clogged inside. I finally tossed it out because even the disposable McCormick pepper grinder works consistently without all the fuss.
Example Output:
negative