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: My son loves these pancakes. Much healthier alternative to the original. I am excited to try the other recipes soon.
Example Output: 5

Example Input: I have three Newfoundlands so we go through a lot of food!  One of the dogs has had severe health issues and since we've switched from commercial kibble to home made food, he's thrived!  He gets regular blood tests to monitor the drugs he's on and they have been perfect since we started on Sojos!  It will not cure his issues, but he has more energy and he can't wait for meal time!  The other two are glowing with health as well!  All three dogs coats are shiny and they have tons of energy (for a Newf!)
Example Output: 5

Example Input: I read all the reviews on every hot chocolate k-cup on the market and decided to try this one first. Its not good. Even on the smallest cup setting it tastes watered down and there is a distinct "plasticy" taste. I think that this an inherent problem with all the k-cup hot chocolates. You just can't fit enough chocolate in the cup so that it doesn't taste watered down. I'm going to stick with making hot chocolate the old way.
Example Output:
2