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: I purchased this as a present but it doesn't come As shown in the picture.  It is little white bags with the flavor written on them.  Someone receiving it as a gift wouldn't even know what it was unless I explained it to them. Will be returning.
Example Output: 2

Example Input: Not one member of my family, including me, like these extremely salty, much too strong a BQ taste to order more.  I purchased them on a recuring basis and i wish to cancel now.  I have received only one shipment. Cancel further shipments.  Not to our taste at all. These are Lowery pork rinds.
Example Output: 2

Example Input: These Nature Valley Nut Lovers Variety Pack was perfect. Although I wasn't sure about the peanut butter bar, it was excellent. I loved the Roasted Almond, Roasted Pecan and the Peanut Butter.  I will definately buy from this seller again. Quick shipping and very fresh.
Example Output:
5