Instructions: 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.
Input: It works pretty well, but, does require a perfectly flat surface to be mounted on. Would be nice if it came with an option to help (like some sort of adhesive mounting option). We opted for this because our shower head has a 1 in. diameter base, and it holds onto it just fine.
Output:
4