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 love canned sardines and when they put me on a low salt diet I figured that was the end of my sardines until I found these. They taste fantastic,the price is reasonable and you can at least have something that before these sardines was not available to people on a low salt diet. Side benefits as they are skinless and boneless. Thanks to the Roand Co.
Example Output: 5

Example Input: I'm so dissapointed these are unavailable right now! I LOVE these crackers with cream cheese - it's my favorite snack! I hope they become available again soon! I can't find them anywhere!
Example Output: 5

Example Input: This tea is the most awful stuff I've ever put in my mouth.  It has a chemical taste.  I tried adding sugar and it didn't help. I enjoy the Arizona Pomegranate Gree Tea and would highly recomment it.
Example Output:
1