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 dog thinks he was born into the gentry and is entitled to fine dining each evening.  Accordingly, he will not eat plain kibble.  A scoop of this on his dry food, a little water to make gravy and we're good to go.  Ordering a case from Amazon was way easier than picking up individual cans at the pet store, too.  All in all, a success for us.
Example Output: 4

Example Input: These chips are the only ones I found to be tasty and healthy. They have fewer fat calories plus higher fiber for those who want good taste and nutrition--the perfect blend!
Example Output: 4

Example Input: Recently purchased this cereal assuming it would contain nothing but healthy ingredients, then I read the label and discovered it contains partially hydrogenated soybean oil and high fructose corn syrup.
Example Output:
2