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 first got the variety pack to try all the different flavors, then I picked 2 and ordered them on Subscribe and Save (1 each on alternate months). It's much cheaper than the vending machine at work and they only have chips that are bad for you. These chips are crisp, delicious, and taste salty, mmmmmmm good! Each bag has 230 mg. of sodium. They only have 100 calories in a bag, and the amount of chips in the bag is ample for one serving, unlike other 100 calorie snacks where you get 7 almonds, or 5 crackers.... Now I can have chips every day at work for lunch, no guilt! The Salt and Pepper variety is absolutely delicious. The plain is great for dipping, and the barbecue is full of flavor. The salt and vinegar is very sour, if you like that type, and the cheddar and sour cream and onion varieties are good, just not my favorites. A very good deal on Subscribe and Save, chips delivered to your door, individually bagged and ready to take for lunch. Convenient! Nothing bad to say about PopChips!
Example Output: 4

Example Input: Of the 12 cans shipped 11 of them had very, very serious dents in them. I'm not talking dings, I talking serious dents. So dented that I truly thought of throwing them away. My husband stopped me though because at $5 a can he felt that it was too wasteful. In my local grocery store, items this dented are put into a reduced price bin, because they usually don't move otherwise.<a href="http://www.amazon.com/gp/product/B002C4HZ00">Cento San Marzano Certified Tomatoes, 28-Ounce Cans (Pack of 12)</a>
Example Output: 1

Example Input: Due to health issues, my husband is newly required to eat a gluten free diet. He acted as if he was on death row. Finding this product has help immensely. I can make him pancakes with fresh fruit and he doesn't feel he is being unfairly punished. Also, my neighbor was faced with a similar circumstance. I shared one of the boxes with her and she is now a fan! <a href="http://www.amazon.com/gp/product/B004391DK0">Bisquick Pancake and Baking Mix, Gluten-Free, 16-Ounce Boxes (Pack of 3)</a>
Example Output:
4