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: Thought this might be a nice alternative to use with my favorite coffee, but was sadly disappointed. It leaked all over - no matter what we tried and the coffee was weak, machine clogged with most attempts and water wouldn't brew thru. At times the cup even melted a little - leaving a nasty taste in the coffee. Go with the greener alternative and try the ekobrew - much better results and no waste.
Example Output: 2

Example Input: At last- a decaf coffee that doesn't taste decaf! Smooth, rich, flavorful, with no bitter aftertaste. Starbucks worthy (but to my husband who doesn't care for Starbucks, it's way better). We like to drink this in the evening and it's basically dessert with cream and sugar.
Example Output: 5

Example Input: I love this sugar. I've been using it, packaged in envelopes, for a year or two for everything. Gives a great homemade taste to cookies. And packaged in envelopes - see <a href="http://www.amazon.com/gp/product/B000LKZK7C">Sugar in the Raw Raw Sugar, 24-Ounce Bags (Pack of 12)</a> - it's wonderful stuff. But not in this packaging. If you don't use the whole 12 pounds right away, the boxes of sugar turn hard as a rock. Have to microwave them, pound them with a hammer, and then pour the sugar into a plastic envelope with a sugar bear - e.g., <a href="http://www.amazon.com/gp/product/B002UKOWFC">JBK Bear Terra Cotta Brown Sugar Saver</a> - to make it possible to use it. Definitely not worth it. Buy it packaged in bags or not at all.
Example Output:
2