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 will never understand the soaps from mainstream, and sometimes otherwise great brands, who claim to have a line of "sensitive skin" products which still contain Sodium Lauryl or Laureth (as in this case) Sulfate. If you're someone who needs sensitive skin products there's a more than decent chance that you also need stuff without SLS. Boo. Refer to their bar soap, which is wonderful.
Example Output: 1

Example Input: We received a box of these at work and the whole package was gone moments after opening it up!  Great biscuits and now I am ordering a couple boxes for a few gifts for people I can't figure out what to get...
Example Output: 5

Example Input: Well, I love hard candies, but not the sugar. My husband & I saw these and thought we'd found the perfect solution. Unfortunately, the candies -- while very tasty -- played havoc with our systems. We couldn't eat more than 8 at one time (5 for me) without getting crampy & gaseous. At first we didn't realize it was the candies causing the effect, but that changed quickly. We had to discard the rest of the product. What a shame.
Example Output:
2