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. 

Ex Input:
These are decent, but if you want a realllly good salt and vinegar chip, try Boulder's Salt and Malt Vinegar chips.  THOSE are awesome.

Ex Output:
3


Ex Input:
I enjoy them a lot and so does my son. I have to say that this kind is one of my favorites. It is full of peanut butter flavor that you forget that it is only 100 cals. As for the amount you get in the bag, it is more than I expecting so I was very happy.

Ex Output:
5


Ex Input:
These have become a wonderful alternative to those afternoon cravings for salt, and or sugar.  They have texture and flavor, and a bag hits the spot.  I would highly recommend these if you are looking for an alternative to the junk from candy machines.

Ex Output:

5