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:
Only 5mg sodium per serving, chips are crisp.  I sometimes will dip in a low salt ketchup and that adds a bit to the flavor.

Ex Output:
5


Ex Input:
These truffles are not as great as they are made up to be. I thought for the price they would have a greater taste, but they didn't have much taste at all. They are not worth the price, but had to find out for myself. I will not be buying truffles again, and I'm not going to spend over $10 for a fresh one.

Ex Output:
2


Ex Input:
Royal Canin was recommended for my dog, but since this line of dog food is specific to breed, it was difficult to find in stores.  PetsMart and Petco carried the Cocker Spaniel formula but only in smaller bags which is much more expensive on a per ounce ratio.  Finding a larger bag has been a great deal.  My cocker loves the food too!

Ex Output:

5