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 like the fact that the music is battery powered! No winding like the old days! Also, you can put music on an SD card and play it in addition to what comes preloaded. Looking forward to using it!
Example Output: 5

Example Input: They do work... mostly. They have held my sheets down from coming off the corners in the night for a few weeks, but it seems like the elasticity has worn off a bit, and it seems that the clamp isn't clamping as well anymore. Especially on one of them. Fortunately, there are 8 included in this pack so I will have to swap it out and see if there is any improvement. Ok otherwise. Update: I'm actually not even using these anymore. They're just more of a hassle to put on than it is to pull the sheet down every night before bed.
Example Output: 3

Example Input: The arms on these are shorter than any other readers I have bought. Seem to be sized more for women than men. They look good, but don't fit that well for a man.
Example Output:
4