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: Love Acer's...this is my 6th one... I up grade and give older tablets to others..this is middle of the road not hi end but good for Bible study.... bought two and one the touch screen is not very sensitive...really have to pay attention.
Example Output: 4

Example Input: These notepads are difficult to write on with a Fisher Space Pen. It does work, but the writing is rather splotchy. Works great with gel ink (but may smear), and is alright with regular ballpoints. It repels water on the surface, but the edges allow water to seep in, so underwater writing may not be a good idea.
Example Output: 3

Example Input: Perfect size for my butts. I don't have to fight with placing it into the snuffer. I love that they are easy to clean too! Will be ordering more and giving them to my family and friends who need them! I hate burning filters!
Example Output:
5