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:
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.

Ex Output:
5


Ex Input:
It's high-quality and the price is right, especially with subscribe-and-save via Prime, but after months of trying to keep up with my subscription, I had to put it on hold.  I'm not a big water drinker, but this stuff has a distinct flavor and when you're using it as a work-out beverage four or five times a weak it eventually wears on you.  Or me, at least. I'd still recommend it, just don't OD the way I did.

Ex Output:
4


Ex Input:
I received the pant faster than expected, but it was brown and considerably smaller than advertised. I have very little hope that this plant will live out this week, but if it does I will update this review with a higher rating.

Ex Output:

2