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 was introduced to the Blair chips by a friend. I mostly ignore potato chips because I really don't like them. However, these I like the most among all the chips in the Blair line. They are savory and can be eaten rapidly. The hot chips are good because they are so hot, I cannot eat them fast. I am so happy I cannot get them at local stores because I would eat them all the time.
Example Output: 5

Example Input: I love this popcorn. Only downside is the shipping and packing. Cost almost as much as the popcorn. Need to pack it better. Bag split and a bunch of loose popcorn falling out of the box when the guy brought it to my door.
Example Output: 5

Example Input: Popchips is a new product for me--ordered after seeing an ad in Weight Watchers magazine.  Loved the product.  Packing was perfect.  Shipping went fine.  No complaints with this order at all.  Probably will order again soon!
Example Output:
5