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: After trying the Namaste pizza crust I was blown away--Delicous!  Possibly, the best pizza crust I've ever had.  So, I tried their Cheez Pasta thinking it would be great as well.  Big surprise.  It was awful.  I could barely tolerate one bite of it.  I, like one of the other reviewers, will save the pasta but make my own cheese sauce.  The cheese sauce smelled and looked terrible.  Do not waste your money on this product!
Example Output: 1

Example Input: Horrible "hemical" taste.Extremely salty !!!!!!  This was a complete waste of money,after the first bag I will have to throw the whole box away !!!!!!!!
Example Output: 1

Example Input: I keep this on hand for the young at heart.  We enjoy a cup almost every night.  Good taste.  will buy again.
Example Output:
5