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: 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: Beautiful color! Wonderful fit! No, they're not SUPER-soft--but definitely soft enough. Just like the percale sheets I remember from my youth, they've a 'crisp' finish & don't make me sweat. They might soften the more they're washed, but I love them now, having been washed only once. Amy wrinkles flatten out when put on the breed. And they even fit my mattress pocket!
Example Output: positive

Example Input: I was extremely disappointed to find that a good majority of the vitamins inside the packaging were broken and crumbled. Basically half of the vitamins needed to be thrown away.
Example Output:
negative