In this task, you're given a review from Amazon's food products. 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 or mixed, 4: good, 5: extremely good. 

Example Input: These are super tastey! I would definitely recommend. The only reason I'm not giving 5 stars is because I wish they were bigger! :D
Example Output: 4

Example Input: I love the product.  But, the bottle design is terrible.  In order to get the last 1/3 or so of the body wash out of the bottle in a timely manner you would normally store the bottle upside down.  With the pointy top that is impossible.  So, you must stand in the shower the try to shake the remaining product the length of the bottle to squirt it out.  This takes much more time that you'll want it to take.  Redesign the bottle with a flat top...please.
Example Output: 2

Example Input: Better than expected, but the peppermint flavor lacks a mint smell or taste. This is a good purchase for the price.
Example Output:
4