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 are super tastey! I would definitely recommend. The only reason I'm not giving 5 stars is because I wish they were bigger! :D

Ex Output:
4


Ex Input:
I just bought the Emril k-cups and have used about 12 of them and half if them exploded in my kurig machine.  It was such a pain and waste of money because I enddd up throwing them away and using. another k-cup because the coffee was full of grindes.  And I cant even write to the seller yo complain!

Ex Output:
1


Ex Input:
I cringed a little after reading the ingredient list. Way too much grains and not enough quality protein for our dogs. Notice all of them are at the beginning, which means they make up quite a bit of the diet. Soy protein is included but some dogs don't do well with soy (mine) and meat should be the protein source in dog food, not grains. Not recommended for your furry ones.

Ex Output:

2