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:
Perfect kneeboard for a student pilot. Has all the bells and whistles (more than I need personally) to alternate to either knee depending on your flight profile.

Ex Output:
5

Ex Input:
In what is obviously designed to be the kickoff to a series, this is a fun, quick read. Characters are a bit cardboard, but when you want desert chases, tomb raiders and not to think too hard it's a great deck read.

Ex Output:
4

Ex Input:
This rack arrived so twisted/bent that it can not be assembled. I wanted it for an upcoming trip but I will not have enough time to return it, wait for the new one to arrive before my trip. Absolutely useless junk with no QC. I will just return this item and go to a local business to get one. Thanks for wasting my time.

Ex Output:
1