In this task, you're given a review from Amazon. 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, 4: good, 5: extremely good.

Ex Input:
I can't believe this book does not get more reviews. I have lots of books and programs to try to learn Spanish. This and Spanish with Paul are the two best that I've come across

Ex Output:
5

Ex Input:
I don't know what happened but the original string isn't any better than this generic string. This one breaks off and also sticks together so it won't auto feed.

Ex Output:
3

Ex Input:
Copper Pearl is amazing! I love this swaddle. Now that my little guy is too old to be swaddled we use it as a car seat blanket and it's big enough I'm sure he'll use it for years to come!

Ex Output:
5