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:
These did not work for me. They did not stay in my ears and would not charge in the charger while these were on the pods. I basically don't even use these. Save ur money.

Ex Output:
3

Ex Input:
These were easy to install and seem to be of decent quality. The finish looks good with all my different door styles and colors. I really wanted all my doors to be keyed alike, and this set provided that option. In fact, each set came with four keys, so I have plenty of spares.

Ex Output:
4

Ex Input:
I've now bought two boxes of these lights but unfortunately only one string has worked in each box. The working ones are fantastic but very disappointed that the other set is not functioning!

Ex Output:
3