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 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: Yum!  All the convenience you expect with a K-Cup with all the flavor of real hot chocolate.  The kids love it, and so will you!
Example Output: 5

Example Input: I was disappointed when I received this dispenser.  It said a large dispenser.  It looks like something for a child to play with.  I bought it for my husband to put in his "man cave".  He is a huge M&M fan.  I buy him a tree ornament each year from the M&M collections.  I was hoping it had more substance to it.  I also did not realize I was unable to return this item.
Example Output:
1