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 the worst gluten free cookies I have ever tasted.  They were hard, dry and tasted like tapioca flour.  Avoid these at all cost.

Ex Output:
1


Ex Input:
This is the best Hot Cocoa product I have found for the Keurig K-cup Brewer. The others I have tried do not have the test or alot of the product remains in the cup.

Ex Output:
5


Ex Input:
I have subscribed these chips. They are so tasty. Not dry or oily. Cannot put it down once open a bag and have to have two bags in a row.

Ex Output:

5