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: Having eaten (and re-eaten) my way though all of the DAS caramel range, this remains my all-time favorite, and the one that usually gets the most rave reviews when I share them (which isn't an easy thing to do - just try one and you'll see what I mean).  I've been a caramel fan for ages, and while Werthers Butterscotch will do in a pinch, nothing has come closer to what my mother used to make than these.  They are chewy, buttery, and the little crunches of salt are spectacular (OK my mother didn't put salt in hers, this is an improvement).
Example Output: 5

Example Input: Delivery of the product was quick, however the items are smaller than how they appear on line. Next time I would order the larger size.
Example Output: 3

Example Input: I purchased this coffee to make iced coffee drinks.  It has very little 'coffee' taste, and the dark chocolate taste is more chemical than chocolate.  Similar to the taste of flavoring used in baking.  I will not be purchasing this coffee again.  My suggestion to those considering a purchase . . . buy something else.
Example Output:
1