Given the task definition and input, reply with output. 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.

After many attempts of trying to peel the icing off the paper I decided that I had to freeze it for about 3 hours just to get it off and put it on my son's birthday cake.
4