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 discovered these when I moved to Canada a few years back.  Before this I had only experienced a thicker Wasa crispbread and was a bit put off at first.  The feelings dissolved the first time I ate one of these with light laughing cow cheese.  They are a little more "powdery" than I'd like, but they compliment most cheeses very well without overwhelming them.

Ex Output:
4


Ex Input:
My honey has a serious sweet tooth, which I accommodate by preparing him a weekly dessert. Martha White's Muffin Mix is very convenient to prepare because it only requires one-half cup of milk, which I toss into my cuisinart; and wah-la six beautiful muffins with virtually no prep time. They are moist, delicious, and economic.

Ex Output:
5


Ex Input:
These are better than any low calorie chips I've ever had, and I prefer them to normal chips. They are wonderful. Oprah even loves them.  I would buy this box again, and probably will, because I LOVE that these are 100 calorie packs. The barbeque and salt and vinegar ones are AWESOME.

Ex Output:

5