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: My son loves these pancakes. Much healthier alternative to the original. I am excited to try the other recipes soon.
Example Output: 5

Example Input: 10 out of 12 cans are seriously dented , and, the dents did not occur during shipping. These were dented befor they were packed in the case of 12 at the factory. These will get trashed because it will be more of a pain to return them. I will never buy these again !!! Amazon did refund my money without having me return the cans. Cudos to Amazon. They are a class act!
Example Output: 1

Example Input: An otherwise good gum reduced to a three-star review by really mind-boggling packaging. I fail to see the advantage of the foil-covered capsule approach. I lose approximately one piece a pack by pressing just the wrong way and having the gum shoot out of the package like a cannon, forever lost. The gum itself is decent, lasts for slightly less than a twenty five minute car drive, packs a comfortable punch, and improves breath. Still, it's not outstanding, and doesn't overcome the poor packaging, so won't be buying any more.
Example Output:
3