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.

Ex 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.

Ex Output:
negative

Ex Input:
This author amazes me every time I read one of her book, I'm pulled right in with the very first chapter!! Emma and Jax have secrets that neither one them wants to reveal but in the end, they are going to have to suck it up and get over with!!

Ex Output:
positive

Ex Input:
Love this dish rack! It is so easy to fold and unfold. It's sturdy and the perfect size. Big enough to fit some items but not so big that it takes up all the space on the counter. Use it everyday and still in good condition. Is slim when folded and put away.

Ex Output:
positive