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: My family is gluten intolerant and we use this product extensively.  Pancakes, biscuits, waffles, it doesn't really matter what you need to bake, this mix comes through.  This is my go to mix above Bob's and all others we have tried.  Try a box, follow the instructions for pancakes, and tell me they aren't awesome... go ahead... I dare you.
Example Output: 4

Example Input: I haven't owned a portable fence for horses until now, but I am impressed and liking this product very much. Upon opening the package I was happy with the portability of the carrying bag, and shocked at how lightweight and compact this system is. It's a great accessory to throw in the trailer when taking the horses out, or just to have around in the event that we need a temporary corral for a couple horses. Once set up, it won't hold more than two of our horses comfortably. I don't think we'd ever try and manage to get 4 inside like the product advertises!  The instructions were surprisingly simple and it set up easily between myself and my husband working on it. I can see how this would be great to have for other animals as well (such as alpacas), but we only have need for it with the horses and have had success in containing them.  The step in posts are fantastically designed, the overall design makes the fence very versatile, setting up easily pretty much anywhere your horse an go.  We're very happy with it's design and portability and will get a lot of good use out of this system, I think!
Example Output:
4