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: I was expecting a very high quality coffee but this wasn't quite it. It's a lot stronger than I was expecting due to the serving size printed on the label. It was pretty strong even for me and I like strong coffee.  However, I adjusted the amount of coffee and after a couple of tries I got a nice pot. It has good, but not great flavor. Definitely better than Folgers and the like but not top tier quality.  I recommend this to anyone looking for something a step up from Folgers.
Example Output: 3

Example Input: My 7 year old Cocker Spaniel loves this food and it's good for him -- he needs to lose a few pounds and this is doing the trick.  Glad I found it on Amazon.  Hard to find elsewhere.
Example Output:
5