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 was not delivered to me and it was not left in my mailbox, its a table .Don't tell me it was delivered and it was not because of a timeline. I would like a refund.
Example Output: negative

Example Input: I’ve bought several for this phone, liked all for one reason or another but none were entirely protective or lacked a good grip so would slide around or drop often. And I also have the problem of wanting to change things up visually. THIS case!!! It’s got it all. Protected all around. The screen cover fits so well there is no hesitation in screen response. Perfect! The case doesn’t add too much bulk and is very lightweight. The blue border is a nice contrast to the black rubber protective edging. The best part visually is the clear back cover allows for me to change things up with phone skins or decals. I’ve got my permanent case. So pleased.
Example Output: positive

Example Input: I tried to contact Anthony's and they refuse to reply. this is not real Ceylon, it is cassia. DO NOT BUY. I am out the price of the product because it is not eligible to return.
Example Output:
negative