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: I ordered the Midnight Black backpack but they sent a gray one. The prodcut itself seems good quality but 4 stars--I'd give it 5 if they had sent the one I wanted.
Example Output: 4

Example Input: I was looking for a mounting solution for my motorcycle gear, and found this. I bought a Three Pack for My Wife, a Friend, and Myself and the quality is great and it works well for hanging our helmets and riding jackets.
Example Output: 4

Example Input: I was expecting them to be funny and at least slightly adult. It was lame. I returned it and got almost nothing back after I was charged a restocking fee. I would have kept it had I known.
Example Output:
2