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: I love this collar! Very stylish and I like that it's easy to adjust the length. It's soft too so I feel like it's not irritating to kitty. I'd definitely buy another!
Example Output: positive

Example Input: I purchased these to replace the straws that I use to get at Starbucks every morning. Starbucks no longer gives straws, so I wanted a replacement that is environmentally concise. These are great. They fit perfectly through the opening in the new Starbucks lids and held up all day.
Example Output: positive

Example Input: Looks to be a very good road atlas: thorough but compact. It will be a companion to the large Michelin road map. I’m looking foreward to using this combination during a Scotland vacation next Spring.
Example Output:
positive