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. 

Ex Input:
This bone is nothing more than a big dog treat.  I have a 2 yr old Pit who ate through the souper in 5 minutes.  After reading other reviews I took it away from him and will save the rest for a later date.  I was hoping for a bone that would last a little bit longer as a chew toy and not just be eaten like a treat.  Will not be buying this again.

Ex Output:
2


Ex Input:
Bought these for a birthday and they were perfect--all arrived uncracked and wrapped really well. Super cute and perfect for 4 year olds.

Ex Output:
5


Ex Input:
Neither of our cats was the least bit impressed with this product. The flakes did arrive as scheduled, but remain unused except for small amounts that were presented to the cats in various ways in hopes that they would find the flakes appealing. No joy.

Ex Output:

2