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. 

Example 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!
Example Output: 1

Example Input: I used to order this product at 25 per box of 12 cans and now it turned into 50 dollars??? how did it double out of nowhere??
Example Output: 1

Example Input: Bought these based on the glowing reviews (4 1/2 Stars), and the fact that they were heavily discounted from the regular price. First of all .8 oz. per bag equals about 15 or 16 chips per bag, which is not many. While this may be fine for those who are trying to cut back on calories, fat or sodium, the fact is that .8 of an ounce is not much, and that might tempt people to eat more than one bag at a time.  Due to the discounted price each bag was around $.55 each, not to bad until you figure that equals $10 per pound. At the regular price its about $16 per pound. As far as the taste, all of the flavors were good, none that I absolutely disliked, but none that really rocked my socks either. Bottom line, at the discounted price I paid I was not disappointed, but if I had paid the regular price for these I would have felt cheated.
Example Output:
3