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: most of the nuts in these bags were so old they had turned black totally worthless will never order again
Example Output: 1

Example Input: Very crisp and tough, does not melt, but  breaks down into pretty large particles in your mouth.  I enjoy it as a cereal, but neither of my 11 mo old twins really enjoy the tough texture.  They like the melt in your mouth and less sugary taste of the happy baby <a href="http://www.amazon.com/gp/product/B001NXHY8Y">HAPPYBABY Organic Puffs, Banana Puffs, 2.1-Ounce Packages (Pack of 6)</a> or <a href="http://www.amazon.com/gp/product/B001NXM3I0">HAPPYBABY Organic Puffs, Greens Puffs, 2.1-Ounce Packages (Pack of 6)</a> which is almost salty. They also love saltine or ritz crackers Annies brand and those saltines are just as hard to chew and great for teething on.
Example Output: 3

Example Input: I have had real truffles only once that I can recall, and that very old memory is of a sublime taste.  The slippery terminology used for 'truffle' oil gave me pause, but I decided to take a chance.  To me, "infused" implies that something has been marinated in a liquid, not that a chemical has been simply mixed in.  Sure enough, the ingredient list on the bottle is limited to olive oil and truffle "aroma."  When I opened the bottle, I could only detect a garlic-like aroma, pleasant but not sublime.  I first tried adding 1/4 teaspoon to a small serving of scrambled eggs, and could detect nothing.  Today I made a 'two egg' (1/2 cup of eggbeaters) omelet flavored with tarragon and filled with simple sauteed potatos, scallions, and mushrooms.  I drizzled on a full teaspoon of the 'truffle oil' after the omelet was set, immediately before filling and folding it.  Again, I could discern no flavor or aroma other than the above ingredients.  I rated this at 2 stars rather than one on the charitable assumption that a younger nose might detect some sort of aroma.
Example Output:
2