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: Another excellent book by this author. It's not morbid or icky-just states the facts. Great for young readers (I wouldn't go below 13 though, just because it's not ...oh...easy to read? Not because of subject matter, but because it is written in an adult voice...she doesn't dumb it down.) I am planning to buy several more for Christmas gifts.
Example Output: 5

Example Input: Just opened the box up, and it paired easily with my Lenovo Tab4 10.1 tablet (Android 7, 2017 model). Its size works well with a 10" tablet--see attached photo. So far, so good 10 minutes after setting it up. Will update review as I get more experience with it.
Example Output: 5

Example Input: Owned this item for a couple year now. Cute novelty gift, but very poorly designed/executed. The batteries are very difficult to install. Display blanks out some numbers about once a week, usually clears up after you cycle through modes. Overall - Meh.
Example Output:
2