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'd never heard of this brand but they were very cheap here on Amazon and I was extremely surprised at how good the Dark Chocolate Hot Cocoa is.  Absolutely worth trying, it's really quite good.
Example Output: 5

Example Input: I am very pleased with this selection.  I have not tried the other hot cocoa brands for Keurig but this one is awesome!  I bought the milk chocolate.
Example Output: 5

Example Input: Despite what many say and think about bulldogs, ours are picky about their snacks.  They love the liver biscotti which can be a hand-fed treat or used in a treat ball.  They last longer than most snacks and because our bullies don't often chew their food, these are the perfect size.  I don't feel bad about feeding these either because they are low calorie and without fillers.
Example Output:
5