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:
This is easily the best potato chip that I have ever had.  Look at the ingredients:  Ginger and 3 types of hot pepper.  How can you go wrong?  Obviously, not for you if you don't like spicy food. But, if you DO like spicy food, you'll probably love these.  They have that hot-with-a-hint-of-sweetness flavor combo that is prevalent in a lot of Thai food.

Ex Output:
5


Ex Input:
Unfortunately, Made in China. I do not trust their manufacturing standards.  Looking for an alternative....

Ex Output:
1


Ex Input:
Way too heavy on carbonation. What flavors were there were too weak to detect. Sorry, but I won't be buying this one.

Ex Output:

2