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: very good price and we love our keurig trying the summer flavors are great and will probably order more before the end of the summer.
Example Output: 4

Example Input: My golden retriever is one of the most picky dogs I've ever met.  After experimenting with various types of food, I have found she loves natural balance.  What I really like about natural balance is the fact that it has multiple flavors in dry and wet varieties.  I mix her dry food with a little wet food and my golden loves it.  Furthermore, I do like mixing up the flavors each time as I think the same meal day over day might get a little boring, so I figured why not.  I tend to stay away from the fish type though as it smells...  Additionally, I started purchasing off Amazon because Petco didn't have the wet food box and only had a couple of cans.  I came home and to my surprise realized that I could save $20 each time I bought dog food if I just buy it off Amazon.  All in all, I definitely recommend and give my stamp of approval to natural balance dog food.  While I have never eaten it, my dog seems to love it.
Example Output: 5

Example Input: I had brought this as a dipping sauce for dumplings and egg rolls I made at home. It taste's great and I think it the same sauce I get at some Thai places cause it tastes the exact same.
Example Output:
5