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: This product is labeled "100% of what you want". But one look at the nutrition facts and you may not agree. While it contains 100% juice and vitamin C, no preservatives or sugar, it contains 135 calories, 15 mg of sodium, and a whopping 34 grams of carbohydrates. All this in a tiny 8.3 oz can! I also thought it was too sweet for my tastes, but I normally drink a diet carbonated beverage, so the sweetness did jump out at me. Just okay. I won't add this to my shopping list.
Example Output: 2

Example Input: I would love to say that I have the time to make my son's food everyday. Its not the case. Honestly, I do make it most of the time, but some days, you just don't have the time/energy to get it all done. Enter this product. Before I bought this baby food, I read the reviews and all these people were saying that it has fruit in it, its like a dessert, yadda yadda yadda. The truth is, is that yes, it has a bit of fruit in it, but its not sweet at all. The fruit merely brings out the flavors naturally so that you don't have to add anything else. Its a great product to enter proteins into baby's diet. The consistency is smooth enough that if you wanted to add cereal  to it also, baby will not choke on it. I highly recommend.
Example Output: 5

Example Input: I order these olives a lot. They are un-like any other olives out there. The subtle flavors of the brine go great with cheeses. One of my favorite appetizer treats for guests.
Example Output:
5