Given the task definition and input, reply with output. 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.

How simple is this product?!!! Is like a pair of socks. Slips over the window frame easily. Allows me to roll the window down fully and give the dog an impression of a barrier. This has helped me so much with air circulation for my dog should I leave him in the car. I recommend this product!
positive