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:
These bars are just the right balance between the flavor of the coconut & the sweetness of the rice syrup. Unfortunately, although the expiration date is in 2013, about a third of mine went bad, or perhaps started life that way. They had a funny, metallic taste, & one even had some black substance on it, which may or may not have been mold. I'm wondering if refrigerating would have prevented this. I highly recommend these bars, but beware of the keeping quality!

Ex Output:
3


Ex Input:
We first received Stonewall pancakes as a gift. We have ordered them 2x on Amazon who has the best prices. Highly recommend this product. Will return here to buy more...

Ex Output:
5


Ex Input:
Apparently 'regular' size = thinner than standard-sized pencils =(  My chihuahuas finish these in a matter of minutes, when it normally takes them days to consume a thicker bully stick.

Ex Output:

1