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: These are great beans for the price. If you live in a big city, however, I'd suggest buying green beans at a local Ethiopian shop or even a community Coop. I also remember a Pea berry out of East Timor that was outstanding, but this Tanzanian Pea berry is comparable to standard beans.
Example Output: 4

Example Input: I ordered the spotted dick. After eating I felt a little strange. I went to the bathroom and to my horror realized that I had this horrible disease. Luckily 1 gallon 128 Floz Tuscan Whole Milk cleared this up for me.
Example Output: 1

Example Input: The BEST investment I've ever made for ginger. It's unbelievable! It's fibrous like the real ginger, has that spicy kick to it, but it's perfect with the sugar - calms it down.  It's very worth the $40 for 5lbs of it!  I'll be getting more soon - I use these as a topper for my ginger cupcakes and cookies :)
Example Output:
5