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 love this candy.  After weight watchers I had to cut back but still have a craving for it.
Example Output: 5

Example Input: It's high-quality and the price is right, especially with subscribe-and-save via Prime, but after months of trying to keep up with my subscription, I had to put it on hold.  I'm not a big water drinker, but this stuff has a distinct flavor and when you're using it as a work-out beverage four or five times a weak it eventually wears on you.  Or me, at least. I'd still recommend it, just don't OD the way I did.
Example Output: 4

Example Input: Melitta's Riviera Sunset Decaffeinated Ground Coffee turned out to be a good basic coffee - not bitter, not burned-tasting, a well-rounded mellow brew that tastes like real coffee. I had it this morning with almond milk, stevia and a pinch of cinnamon, and though I'd had a bad night and didn't even know if I could handle coffee, it was delicious and easy on a morning tummy. Besides brewing it alone to get a nice decaffeinated coffee for night-time drinking (especially in the winter), we've been mixing it with regular coffee in various blends, depending on our caffeine-related needs at the time.  The packaging is practical and easy to re-close and the grind is good for my automatic coffeemaker. I will buy this one again.
Example Output:
4