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 am a senior and don't get the exercise I know I need. This has helped me so much with the circulation in my legs and given me muscle that I haven't had in years. I love it because I can sit in front of the tv or while on my computer. I usually use about 30 min every time and I love it.
Example Output: positive

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 this a few months ago and have not been disappointed, it will definitely charge an iPhone 7 several times and although it’s a little heavy as far as power banks go and the charging time for a complete charge is overnight I couldn’t be happier with how it works!
Example Output:
positive