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:
Had this welded onto my old Legacy GT and it sounded great! Only downside is you can tell the quality of metal is decent but not great.. hit a curb coming out of the driveway a couple times and it bent the very top flat almost and pretty easily but I'll give it the benefit of the doubt considering my car was pretty low, so as long as you're not hitting dips and curbs it'll hold up well. With that being said the first week I had it I had to carry around a bottle of water in my car to hose down the inside every time I parked and got out as the fiber glass inside is either too dry or just awful quality and would literally light on fire and dump smoke out of my exhaust! After it had all burned out my car was even louder and sounded pretty sweet but I did have to worry before then that my car would light on fire if I didn't put it out when I parked.

Ex Output:
3

Ex Input:
This book is awesome! Anyone who loves the ocean needs this in their home. Absolutely beautiful photography and some really cool quotes throughout. Highly recommend.

Ex Output:
5

Ex Input:
Cools you down, but then heats you up. Wish there was a way it was softer and didn't have to put under the sheet so I could just throw it away once I've cooled down.

Ex Output:
1