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 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: Long story short - these are very tasty. We have purchased a number of flavors from this brand, this is my favorite.  BUT... as noted by another reviewer - these contain MSG in the form of "Yeast Extract".  It has become a popular means of hiding MSG lately by calling it different things, as a person who now finds himself having to use more caution in what I consume I find the whole process of hiding in plain site very bothersome.  Also, the bag is not very large, but half of it is air. This may well help in shipping, but when paying a premium price for 'organic' it just seems more deceptive.
Example Output: 2

Example Input: This Hot chocolate is very good. It has just the right amount of milk chocolate flavor. The price is a very good deal and more than worth it!
Example Output:
5