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: I bought a pair like this pair before and loved them. When these arrived I did not open until much later, but when i did i discovered a missing screw.
Output:
3