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 bought this item when it was heavily discounted (about $12) and it got here very promptly, since I am a Prime member. Every can has small dents. The discounted batch I ordered and recieved appears to consist entirely of factory rejects. They were bought 02/2012 and have a 12/2013 best by date, so not that big of a deal. None of the cans are punctured, just small dents. The contents are currently GTG.  I'd say if you are planning on eating these within a few months to a year or so of purchase, go ahead and do it. If not, I wouldn't trust dented cans beyond their best by date, or even really too far before then.  As for the contents, same as you buy in the store. Wife and kid love them, which is why I bought it.  The price has more than doubled since I got mine. Perhaps I just got a reject buy... Be warned.

Ex Output:
3


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:
As the ingredients contained in this food are not the optimal food sources essential to a cat's well being, I don't actually feed my cats this dry food.  Corn is the first ingredient, which is a food my cats really don't crave.  There is a meat source as the second ingredient, but unfortunately, it is a by-product.  Although there are a couple of other meat sources listed in the ingredients, the addition of artificial preservatives and coloring make this cat food a less than desirable food staple for any cat.  However, the Amazon price is good and with Amazon prime 2-day free shipping directly to work, this is a very convenient food for the shop cats I feed.  While the ingredients aren't the best, feeding it along with canned food, it is a balanced diet and seems to keep the shop cats healthy.

Ex Output:

3