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 ordered this for gifts around Christmas time. I actually was hoping to use it for our Christmas day meal. Two out of the four jars I ordered were rotten and inedible. I never did get to try it and I was very annoyed and disappointed!
Example Output: 1

Example Input: I wouldn't even think of buying this product unless I know the price per unit. How can I compare other items online or in a store?
Example Output: 1

Example Input: Switch Kiwi Berry is a soda made from carbonated water and juice concentrates of Apple, Grape, Kiwi, Acerola, Raspberry, Strawberry and mysterious "natural flavors". At 135 calories per can, it's slightly higher in carbs than an average soda.  I gave it two stars because although it is refreshingly free of high fructose corn syrup, it claims to be "all natural" -- not sure what's natural about juice concentrate. And, like regular soda, it is chock full of "empty" carbs -- like eating raw sugar. I get the feeling from the packaging we're supposed to think it's a healthier alternative, and this seems disengenious at best.  It tastes OK, but really isn't anything special; it doesn't taste like kiwi fruit and only vaguely of strawberries.
Example Output:
2