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: Of all the soap dispensers I have used this is by far the best. It's easy to install and fill and it's quite substantial. Soap is always ready to dispense on first try and there is no leakage. Great product.
Output:
5