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: These are delicious crackers, but don't ship well, and many end up broken in the process.
Example Output: 3

Example Input: Unfortunately, Made in China. I do not trust their manufacturing standards.  Looking for an alternative....
Example Output: 1

Example Input: Bought these to give out as party favors for my son's baseball themed birthday party.  They were a huge hit with both the adults and children.
Example Output:
5