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 agree with the other review, these chips are not for a sore mouth or tender gums. The chips are very hard and the taste is delightful if you enjoy the salt/vinegar combo. Unfortunately, every bag I received in that case was over cooked! They were very dark and only a few golden brown chips in each bag. They definitely need to improve that!
Example Output: 2

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: looking for bits as real blueberries seem to have no flavor these days.. these were very good,  Would def buy again
Example Output:
4