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: I wouldn't even think of buying this product unless I know the price per unit. How can I compare other items online or in a store?
Example Output: 1

Example Input: I'm dieting, and I use these as a "treat" to myself, when I'm craving chocolate.  I usually brew one of these & one of my coffee K-cups (either plain or hazelnut).  For 60 calories, it's not a bad way to satisfy a chocolate craving when you're on a "calorie-budget!"
Example Output: 3

Example Input: loved the assortment pack. everyone in family loves them.  low fat, lower calorie and all natural, simple snack for kid's lunch bags. It is peanut and tree nut free (safe for allergy kids) and although it is made on equipment shared with wheat, I bought this for my child who is on an wheat limiting diet.
Example Output:
5