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 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: I really like the frozen Corn Muffin Tops, but the mix resulted in a dryer product. I used the paper muffin liners and I think these might have added to the dryness.
Example Output: 3

Example Input: The label on the little bag says 1 serving is 120 calories. But one serving is 1 ounce. The little single serving sized bag is 1.5 ounces! So there are 180 calories in the bag. This is sneaky. No one is going to open their bag and measure out one ounce, then save the other half ounce...  EDITED TO ADD: I ordered these again because the price went down momentarily (is now back up) and the product is now changed. Although Amazon still had it listed at 12, 1.5 ounce bags, what I got is 12, 1.2 oz bags. So now yes, one bag is a serving but the nutrition facts do not add up to what was listed before. Now a bag has 120 calories and 15g carbs. Another sneaky move, you get less for the same price.
Example Output:
1