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 so wish I would have read this review before purchasing TWO gallons of this oil for my health issues. It reeks like a chemical rubber smell. This smell is coming from the black rubber gasket in the lid. When I called to report the situation to the company, Sabrina told me I would have to pay to send them a sample to have tested by a lab. Unbelievable. Good customer service would indicate that they would pay for the product to be returned and give me a full refund, including shipping. The product is faulty. Period. I will never order anything from this company again and do not recommend it to anyone based on this horrible customer service and lack of responsibility and ownership.
Example Output: 1

Example Input: NuNaturals Stevia is the only sweetener that I use in my beverages and cooking. I have tried other brands and this one is the best! It hasn't any odd taste, and tastes better than sugar to me. I buy the large 12 ounce container and it lasts me for months! I only wish they would put this in more products sold at the grocery stores. There is a soda that has stevia in it that I purchase at a health food store called Virgil's Zero and it comes in different flavors...it is great and I don't have to be concerned about the sugar content that is in traditional sodas. This product is great and I think is the best of stevia products on the market.
Example Output: 5

Example Input: Merchandise was not damaged during shipment but supplier send me damaged and incorrect merchandise.  3/4 of the cans were badly dented and the cans they shipped were not DOP Certified.  They sent me lower standard merchandise.  Received full refund from Amazzon.
Example Output:
1