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: Was looking forward to this drink but was put off by its sweet soda-like taste.  Maybe it's an acquired taste? I'm not sure  but the high calories don't make me want to try.  Looking forward to a diet version.
Example Output: 2

Example Input: I first got the variety pack to try all the different flavors, then I picked 2 and ordered them on Subscribe and Save (1 each on alternate months).  It's much cheaper than the vending machine at work and they only have chips that are bad for you.  These chips are crisp, delicious, and taste salty, mmmmmmm good! Each bag has 230 mg. of sodium. They only have 100 calories in a bag, and the amount of chips in the bag is ample for one serving, unlike other 100 calorie snacks where you get 7 almonds, or 5 crackers....  Now I can have chips every day at work for lunch, no guilt!  The Salt and Pepper variety is absolutely delicious.  The plain is great for dipping, and the barbecue is full of flavor.  The salt and vinegar is very sour, if you like that type, and the cheddar and sour cream and onion varieties are good, just not my favorites.  A very good deal on Subscribe and Save, chips delivered to your door, individually bagged and ready to take for lunch.  Convenient!  Nothing bad to say about PopChips!
Example Output: 4

Example Input: 810 MILIGRAMS OF SALT PER SERVING is not a healthy amount!  Yet the other ingredients in this condensed soup make it SO delicious, even a "salt counter" like myself finds it hard to resist!  THIS IS NOT A SNACK-FOOD!  It needs to be MIXED with other, preferably totally salt-free ingredients!  Not only a soup can be made with this "condensed yumminess".  I have used it, (with salt-free tuna and/or salmon), instead of mayonaise, and added bread crumbs, for a delicious tuna spread!  So -- enjoy this condensed soup!  Just be aware of the absolutely t-r-e-m-e-n-d-o-u-s amount of dangerous sodium in it, and drink, eat, and cook with it, accordingly.  ...............................................................  NOTE TO CAMPBELL'S: I realize that salt here is used as a preservative.  But VITAMIN E is also a good preservative.  Perhaps you could use less salt and more vitamin E to preserve your soups? I hope so!  And will be looking forward eagerly to the day when you do!  Thanks!
Example Output:
3