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: Only 5mg sodium per serving, chips are crisp.  I sometimes will dip in a low salt ketchup and that adds a bit to the flavor.
Example Output: 5

Example Input: I love the product.  But, the bottle design is terrible.  In order to get the last 1/3 or so of the body wash out of the bottle in a timely manner you would normally store the bottle upside down.  With the pointy top that is impossible.  So, you must stand in the shower the try to shake the remaining product the length of the bottle to squirt it out.  This takes much more time that you'll want it to take.  Redesign the bottle with a flat top...please.
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