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 product has the pink tint removed which is the main ingredient to tighten under eyes. Very disappointed. I will start looking at other products. This is the 3 red time this has happened.

Ex Output:
2

Ex Input:
Very fragile and difficult to get the battery pack in the middle. Could not even put one on the front spokes are too narrow for the battery pack to fit through.

Ex Output:
3

Ex Input:
It was soft before i sewed it in and lovely for the first week of sew in . Then it started to shed a little more and have knots. Reacts well to flat iron and holds curls with product. Not the best but its ok.

Ex Output:
3