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.

Q: This item was much shorter than I expected it to be. I have an alaskan malamute and this did not do the trick in trying to help with his pulling. If you have a small dog, this will work for you.

A: negative
****
Q: The Roomba 980 performs as stated. Excellent pick up and battery life. The WiFi connectivity is handy for as needed cleaning between scheduled times. We are very pleased with the unit.

A: positive
****
Q: The back broke within three weeks. For the cost you would expect better quality. Do not waste your money on this product. It is a piece of junk... I will never buy Urban Armor Gear again.

A:
negative
****