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 keep this on hand for the young at heart.  We enjoy a cup almost every night.  Good taste.  will buy again.
Example Output: 5

Example Input: I purchased this as a present but it doesn't come As shown in the picture.  It is little white bags with the flavor written on them.  Someone receiving it as a gift wouldn't even know what it was unless I explained it to them. Will be returning.
Example Output: 2

Example Input: This is not a gourmet chocolate chip cookie, but is the best chocolate chip cookie that we have found in the grocery store. It is not too firm or soft, has a good amount of flavorful chocolate chips, and makes for a nice snack or dessert. We have eaten these for years in my house.
Example Output:
5