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've tried all three new 'Dark' offerings from Gevalia and I think this is the best one from the three. Gevalia finally came up with coffee worth serving to your guests. Coffee has an earthy bold taste with little to none bitterness and no metallic after taste; it actually leaves a nice smooth tasty chocolaty after taste.  The pack comes with 12 big T-discs that will brew 8 ounces of coffee. This coffee will delight those who love the darker roasts.  Update: I am on my 5th cup of this coffee and it was really grown on me (changing from a 4 to 5 stars); it is quite tasty and smooth. This is one coffee that will truly satisfy the void that Sbux left. There will be some that will say that this is not the same as Sbux and it isn't! Try the coffee and give it a fair taste without trying to compare it to anything else you may find yourself quite surprised at the findings.  Highly recommended and definitely will be buying this one again.
Example Output: 5

Example Input: I'm presently on a diet and I was at my Fresh and Easy Neighborhood Grocery looking over possible diet foods. I wanted things that were tasty, non-fat and low in calories. I came home with about a dozen items. That's how I discovered the Tillen Farms Pickled Crispy Asparagus. Well, I've always liked asparagus anyway and I've enjoyed several brands of pickled asparagus. This Tillen Farms brand is really, really good! It's the best I can recall. There's an excellent flavor and a big clove of garlic down in  the bottom of the jar which I'm looking forward to eating. I can't believe how good this asparagus tastes and right on the front it says "only 60 calories per jar!" Now this is my idea of a good diet food!  Gary Peterson
Example Output: 5

Example Input: Two of Aunt Gussie's cookies contain 23% of daily fat allowance!  The cookies are so full of grease they fall apart.  They may be sugar free and gluten free, but they make it up with mostly FAT!  I can't even give them to my grandchildren!
Example Output:
1