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 bone is nothing more than a big dog treat.  I have a 2 yr old Pit who ate through the souper in 5 minutes.  After reading other reviews I took it away from him and will save the rest for a later date.  I was hoping for a bone that would last a little bit longer as a chew toy and not just be eaten like a treat.  Will not be buying this again.
Example Output: 2

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: So so good!  Delicious, easy to prepare food!  I would definitely order again.  Had a gourmet taste, and took only minutes to get ready.  Yum!!!
Example Output:
5