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:
Had to return it several times for a close enough fit. A size XXX is actually a large adult size and medium fit around the arm/shoulder area. Finally gave up and got a full refund.

Ex Output:
negative

Ex Input:
We love this kit, which includes everything we need for birthday decorations. It saves time for us instead of looking for birthday related decorations here and there in different stores. It is a decent product and has a great quality! Thank you.

Ex Output:
positive

Ex Input:
I was sent a completely different product , a belly button ring. This was after weeks of waiting for the correct product to come. Not happy with the shipper...:(

Ex Output:
negative