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: This food is great - all ages dogs.  I have a 3 year old and a puppy.  They are both so soft and hardly ever get sick.  The food is good especially when you have Amazon Prime shipping  :)
Example Output: 5

Example Input: I guess there is a reason that the ingredient section on this page doesn't mention that the first ingredient is trans fat (partially hydrogenated oil).  Had I know, I would not have purchased this.  Consumers need to vote with their dollars and avoid buying items where the manufacturer is using cheap and unhealthy ingredients.
Example Output: 1

Example Input: If you love jalapeno chips then Kettle is a must try. Nice and cruncy with the kick of jalapeno. Delicious. Addicting. Recommended.
Example Output:
5