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:
Great book...really many tasty recipes are there in this book..which keeps you fit and healthy..I like this helpful guide very much..author explained very well..highly recommended

Ex Output:
5

Ex Input:
Why am I only being refunded $4 for this textbook when I paid a little over $25? I paid for shipping beforehand, and the tear in the book's cover was not my fault. I received the book exactly like that. The book was not used at all.

Ex Output:
3

Ex Input:
This other reviews are right, this ring does run small by about 1/4 size... I ordered a size 5 and it is the exact same size as my 4.75 sized wedding bands .... but for me, that was perfect bc I won't have to size it down, but something to be aware of, also the ring box it came in was all smashed and smooshed when it arrived and I could barely open the box up... the ring was fine and it worked so that's all that matters- hopefully the ring holds up

Ex Output:
4