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. 

Example Input: So life with a gluten allergy can sometimes seem unfair; however, once bisquick started making this product, things got a lot more equal. It tastes like Bisquick. It works like Bisquick. Hey, it is Bisquick. It just happens to be gluten-free. Perfect pancakes! Enough said.
Example Output: 5

Example Input: I have been making Belgian waffles using the Stonewall Kitchen Farmhouse Pancake and Waffle Mix for over three years.  My waffles are undoubtedly the best ever!!!  I like my waffles light and crisp - I can't stand a heavy soggy waffle. These just melt in your mouth.  I have made homemade waffles, but I have yet to find anything that can compare to this mix.
Example Output: 5

Example Input: I have used this product for a few years now. This being the first time from Amazon. I'm glad it was there. This is by far the best pancake/waffle mix on the market bar NONE !
Example Output:
5