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: This stuff sounded perfect...way too much red dye and no taste according to me and my 3 friends who tried it...kind of salty.  Basically, I would stay away from it.  I am tempted to toss it out, but paid too much to feel right about it...
Example Output: 2

Example Input: These are delicious crackers, but don't ship well, and many end up broken in the process.
Example Output: 3

Example Input: I have had to change my diet and now have better health. These are very tasty.
Example Output:
5