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: Tastes good, but barely any protein. If you want protein, get Nutiva's unflavored 50% protein powder. You can flavor it yourself. It's cheaper and has more protein.
Example Output: 3

Example Input: I love this candy.  After weight watchers I had to cut back but still have a craving for it.
Example Output: 5

Example Input: I agree with the company motto "A Natural Obsession".  I tried a small bag at the local store and immediately bought in bulk online to save about 30 percent.  The flavor of these is very strong, so they are best paired with a food that has a very mild flavor, like steamed vegetables or plain whole grain bread.  Otherwise they compete or clash with the other food.
Example Output:
5