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: I've tried a few different flavors of Switch and this is my least favorite. (My favorite is the cherry.) Unfortunately because I didn't enjoy this flavor I didn't find it as refreshing as the others.  I quickly handed it over to my son who does like kiwi berry flavors and he did like it a lot. Of course, since it contains enough vitamin C for a whole day, I felt just fine giving it to my child, too. No preservatives, no added sugar. I like the carbonated soda product a lot, just not this flavor.  However, the biggest flaw with this product is that it's too expensive in my opinion for the little cans you get. Rounds out to about $1 per can. Less than you pay often with a vending machine but twice what you pay for a flavored water or vitamin C juice pouch when you buy them in larger quantity. Not worth it. :(
Example Output: 3

Example Input: My son really enjoys Earth's Best lentil!  He eats the entire jar for dinner and always wants more.  The product shipped very quickly.
Example Output: 5

Example Input: I decided to try this formula for my baby since he started being very gassy. However, this formula made him more gassy...the formula is very thick and produces a lot of bubbles that gets fed to the baby. I tried to make the formula with anticipation to let the bubbles disolve but that didn't work.
Example Output:
1