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 chips are the only ones I found to be tasty and healthy. They have fewer fat calories plus higher fiber for those who want good taste and nutrition--the perfect blend!

Ex Output:
4


Ex Input:
These are super tastey! I would definitely recommend. The only reason I'm not giving 5 stars is because I wish they were bigger! :D

Ex Output:
4


Ex Input:
Medaglia D'Oro has to be the worst coffee I've ever had. It had an old musty flavor and odor. You get what pay for.

Ex Output:

1