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: I used these lollipops for a candy princess costume for my daughter. They came in perfect condition and exactly like the picture shows. They do come in a group of 16...such a great value! I was extremely satisfied!
Example Output: 5

Example Input: i love popchips and this was really a treat to get the variety of flavors and the individual bags were such convenience! Thank you!
Example Output:
5