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: Like other reviewers, I'm disappointed they changed the formula. My dog has a bunch of problems and pees/poo's himself everytime he goes out. I use these in-between baths to keep him clean and they used to be a LIFESAVER. With the new formula he doesn't get nearly as clean as he used to and he still smells. They work and I be see soils coming off, just not completely.
Example Output: 3

Example Input: First time having a recorder. I figured that would be nice to have a recorder if you have kids.so I bought one .it is easy to use and it worked great,I can recording or taking photos.and the pictures is very clear.only thing is that it doesn't come with a SIM card and I need to get one.but still it is worth buy.
Example Output: 5

Example Input: The grinder functions fine. However, it looks nothing like the picture. The mandala is a sticker and it is not placed well, it is pretty far off center. This was supposed to be a gift. I am returning it.
Example Output:
2