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:
This book came in really well and the material is is awesome this book is awesome I can't wait to read it it's amazing you should really really buy this

Ex Output:
5

Ex Input:
Got two of these for 3 gallon water jugs. Feel stupid not to have gotten years ago. Mostly easy to put together but instructions and diagrams could be better.

Ex Output:
5

Ex Input:
I bought a package of three. Two of them have already stopped working and it's only been about six months. The use has been minimal. We each used one on our nightstand, and I kept an extra one in the office. We never traveled with them, never took them out of the house, and they just stopped working for no apparent reason.

Ex Output:
1