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: Even with small containers, they don't fill them up.  These little tins are less than half filled and at the price charged it seems a rip-off. Is there some exotic ingredient as costly as gold contained in those tiny squares?  Or how about the cereal ploy, they were filled at the factory but settled in transport. Can manufacturers be honest in their dealings?
Example Output: 2

Example Input: It makes good tasting gluten free food... but... like most gluten free food, it's expensive and it's got a slight grit to it. I've made biscuits, waffles, and pancakes with it... a friend made some awesome banana bread with it. it's very good for gluten free...
Example Output: 4

Example Input: Because they brought bagels to America without which we never could get maximum level of enjoyment out of this delightful low cost caviar.  Caviar for breakfast!  We use the small soft plain bagels cut in two upon which we smooth a bit of cream cheese then a nice ring of caviar in the center of which is colorful and delicious cut up hard cooked egg then add a perfect cup of coffee.  This is is best done on a week end so it can be savored ever so slowly--no stress involved--pure luxury.  Yes, Yes, Yes, yes, yes.
Example Output:
5