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.

Example Input: Like all my past Sonicare brushes, this one broke. However, this one crapped out much faster than the other ones that I've had. I'm going to try some other brands and see if I have more luck with those.
Example Output: 2

Example Input: I got the impression that they might stain, but then they washed up pretty well. We haven't used them a lot yet but she enjoyed cutting zucchini and with some assistance carrots.
Example Output: 4

Example Input: This product is very hard to get it to stay just where you need it. It also broke right at the clamp so I had to throw it away after 1 month of trying to use it.
Example Output:
1