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 have been searching for a natural lemonade drink mix that would actually taste good.  This is not one of them.  Did not like the the bitter taste of this drink mix. I can make my own fresh squeezed lemonade better than this stuff.  In the mean time I purchase Newmans Own ready made lemonade if I don't have the time to make my own lemonade.
Example Output: 2

Example Input: Like I said about the icing....I am so happy to be able to buy this online. It is a family favorite, it also was shipped on time and arrived early. Definitely going to buy again.
Example Output: 5

Example Input: I love Popchips. They may take some time getting used to if you're used to the oiliness of potato chips, but they're only 100 calories per bag. Buying a 24 pack saves you money per bag, but you're sooo tempted to eat them with so many bags around!
Example Output:
5