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: These are some really good headphones my only problem is it says it has a 30 hour battery life but mine start peeping after just a hour. I checked and it goes from 100 percent to 20 in just a hour. I believe I have a defective pair....
Output:
2