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 father could no longer take care of his beloved 6 year old Cocker Spaniel, so I decided to take her into my family. When I brought her to NYC she had ear and eye discharge. She was also  slightly overweight. After a check up with a vet that ruled out infection, I decided to try Royal Canin based on the numerous good reviews.Within a week her ear and eye problems were gone and she dropped a good amount of weight. This is going to be the only food that we will be feeding her!
Example Output: 5

Example Input: This product is labeled "100% of what you want". But one look at the nutrition facts and you may not agree. While it contains 100% juice and vitamin C, no preservatives or sugar, it contains 135 calories, 15 mg of sodium, and a whopping 34 grams of carbohydrates. All this in a tiny 8.3 oz can! I also thought it was too sweet for my tastes, but I normally drink a diet carbonated beverage, so the sweetness did jump out at me. Just okay. I won't add this to my shopping list.
Example Output: 2

Example Input: I got this in my Christmas stocking from my stepfather.  We're both foodies, and try to cook like chefs in our homes.  I love this product.  I use this one for scallions/green onions which until recently always went bad before I could use all of them.  Sometimes I threw out more than 5, most times 2 or 3, but I honestly cannot remember the last time I used every single one.  That is, until now.  Inside the savor pod, they grow and keep for weeks (easily more than 3).  I am planning on buying the set of mini savor pods so I can actually use them for fresh herbs - storing my herbs in the same container as my onions is not a good idea.  The only drawback with this product is that the clear plastic cover is a little tricky to remove as others have mentioned, but wrestling with it is OK with me so long as I can use all my product before it goes bad.
Example Output:
5