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: there is a taste of sugar substitute, the aftertaste turns me off, I've even tried using a little bit of milk in the mug before hand to hide the taste. It didn't, so i'm just using Swiss miss powder and a little milk to make it a creamier hot chocolate before using using my keurig.
Example Output: 2

Example Input: I just received these bricks today and was very disappointed to find that BOTH of the bricks were broken and unusable as a serving/cooking plate.  They were busted completed in half. They were packaged in one sleeve of small bubble wrap in a shallow box with no other protection or packaging in the box.  I went online to try and return them and they are not eligible for return.  This is the first return I've ever tried to do in over 7 years of purchasing items off of amazon (to the tune of several orders a month!) and yet the one time that I want to return a defective product, I can't do it.  I will be much more careful about what is eligible for returns and what isn't in the future.
Example Output: 1

Example Input: Due to my husband's and son's inability to eat gluten, cornstarch is used very frequently in many gluten free recipes.  I am very concerned with the prolific use of GMOs in corn especially and my family's increased consumption of it.  I wanted to find an affordable GMO free cornstarch product to use in all my baking.  Rumford Natural Cornstarch is the one!  I've been using it for months now with great success & satisfaction.
Example Output:
5