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 am a fan of Silver Palate cookbooks and was delighted to see this sauce on the grocery shelf. After getting it home and warming it in a saucepan, I gave it a taste. It was so salty, it was inedible. (And I am not reluctant to use salt.) 660 mg of sodium per 1/2 cup? Are they serious? The salt overpowers any subtle flavors in the sauce. With hypertension representing a major health problem, this is irresponsible. It leaves a bad taste in more ways than one.
Example Output: 1

Example Input: Not always available at our local stores. I love them. They are especially good watching football games, with you favorite malt beverage. This is a good deal, and super fast delivery, too. The nuts were fresh and tasty, as always.
Example Output: 5

Example Input: You don't need salt to hide the taste of potato chips. And these chips prove it. The taste of the potato comes through, instead of being masked. OK, so they're still a snack food, but no salt and no trans-fats mean these are about the healthiest potato chips you can get. And if you're on a low-salt diet (like I am), having these available means I can eat chips, and Kettle are just the best.
Example Output:
5