Instructions: In this task, you're given a review from Amazon's food products. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral or mixed, 4: good, 5: extremely good.
Input: This stuff is great because it's low glycemic. Substitute this to sugar and you'll be doing your body a great favor. This size is economical and shipping is fast, too. I got mine very soon.
Output:
5