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 hate giving a negative review, but this product simply did not work for me at all. I tried it on two occasions, and after the first occasion was a failure, on the 2nd occasion liberally sprayed 7 pump sprays under each arm for a thorough soaking. In both cases early in the day I discovered it was not working at all. That is, I smelled my own body odor. Not good.
Example Output: 1

Example Input: I love this color and purchase it often, but this is the first time I have purchased from Amazon. The pro: it brightens up my face without being too sparkly and stays on all day. The con (and this seems to be exclusive to the Amazon version): it arrived in a much looser powder than the version I have purchased for years, in-store, which makes it messy to apply. Otherwise I would give it 5 stars.
Example Output: 4

Example Input: I ordered and paid for two sets of soaps but only received one set. Are you sending the second set separately? I need them ASAP as they are part of a Christmas present.
Example Output:
1