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'm a big Juan Valdez colombian fan. This Jamaican stuff doesn't have the kick that I love from coffee. It's sorta flat. Especially for something I spent $75 for two lbs. Goin Back To Colombian (twang twang)
Example Output: 3

Example Input: I bought these for my son to take to work for lunch. Apparently his co-workers found the smell so offensive they asked him not to eat it at work again. Maybe it was a bad batch...
Example Output: 1

Example Input: You won't miss your old waffle/pancake mix when using this wonderful product.  I mix it with oatmeal in most cases and it makes wonderful waffles.  Pretty easy to give up gluten with this mix.
Example Output:
5