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:
For those who love salt and vinegar potato chips, this is the one to choose. The flavor is zippy and tart, with no unpleasant chemical aftertaste like the less "natural" versions of this snack. The 2-ounce bags are just right to share at lunch. The chips are a little greasy, and that's why I've given them 4 stars instead of 5.

Ex Output:
4


Ex Input:
This company is a sponsor of the Rush Limbaugh radio show.  This means that Proflowers pays for and profits from Mr. Limbaugh's hate speechs against women and non-Caucasian people.

Ex Output:
1


Ex Input:
I am amazed how well these little cups taste.  These Kcups taste very well.  This hot chocolate taste great and are ready in one minute.

Ex Output:

4