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 door lock worked great... for 18 months. Then, half of the buttons stopped working. Replacing the batteries didn't help. The door is located in a long covered breezeway and sunlight nor rain ever hits it. We live in a low humidity location (San Jose, CA). The cost of this door lock is greatly diminished if you have to buy a new one every 18 months. I browsed through the reviews and this is quite common, so don't say I didn't warn you.

Ex Output:
2

Ex Input:
This is okay, but it arrived damaged and indented. It's not worth it to try and return it so I still hung it, but it seems fragile. Wish there was a more straightforward way to be at least partially reimbursed, but that's the risk of buying online!

Ex Output:
3

Ex Input:
It was easy to use yes. But it didn't hardly give any color. The color I had was very spotty! It took using over half of the bottle to even start to notice anything.

Ex Output:
1