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.

Example Input: Exactly what I expected from a knock off Google cardboard product which costs 1/4 the cost of the original. Works great for what it is. It was a great introduction to VR and convinced me I needed to invest in VR as this was enjoyable to view videos and games through. I have since purchased a much more expensive model with built in headphones and adjustable focus/pupil settings.
Example Output: 5

Example Input: These are nothing like lululemon's align pants. Way more like lululemon wonder under. They seem decent enough, especially for the price, but I was hoping for an align knock-off based on reviews. These do not have that buttery-soft texture whatsoever. I got a size small, usually wear a 6 in lulu, and a small seemed right. Any larger and I would have wanted a medium.
Example Output: 3

Example Input: This mat is softer than I'd like, my heels dig in whenever I stand on it and it makes me feel unstable. I use it in front of my sink and it keeps moving around on my bamboo floor and I keep tripping on the corners. I wouldn't buy it again.
Example Output:
2