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 is my fourth order of these pork rinds and I'm not sure what's up, but something's really amiss.  The bags are leaking some kind of grease and don't fluff up during the microwave process.  I used to love these, so hopefully this is just a bad batch.  If not, then Lowrey's needs to look into this and fix whatever has happened to a once great snack.
Example Output: 1

Example Input: I purchased this item as an alternative to traditional K-cups in an attempt to save money; however, this product did not work well in my machine. I followed the directions and read reviews to see what works best, but was not able to use the K-cups effectively. The cup itself is too weak and warps in my machine. I compared the shape before and after and there is a big difference; this K-cup seems to expand horizontally and vertically because the plastic is not strong enough. Also, the K-cup is shaped differently from the traditional K-cup. This is neccessary because it does not use foil as a topper, but does not seem to work. In the end, I had to clean up several coffee explosions in my kitchen to figure out how it works, but still could not use it effectively. Maybe I am not doing something correctly, but I'm sure there is also an issue with the product itself. While I do like the idea, I would not suggest purchasing this product until the bugs are worked out.
Example Output: 2

Example Input: I have always been a fan of Kettle chips.  When you open a bag of Kettle chips you know you are going to get quality.  These chips are no exception and live up to the name printed on the package.  The New York Cheddar chips  have a very subtle flavor to them.  You can taste the cheddar in them; but it doesn't smack you in the face like supermarket brand chips might.  The taste lingers as well which is a definite plus!  Another aspect about these Kettle chips is the fact every chip is nice and crisp, that crunch in your mouth.  On top of that there are no burnt chips in any of the bags I have had since the purchase.  The only negative I might have is that the flavoring of the chips is uneven.  Some chips might pack a nice cheddar punch while another might taste rather plain.  This isn't a big flaw as it happens when getting seasoned and doesn't ruin the bag at all.  Overall the quality of the chips is fantastic.  The flavor is great and you wont' be disappointed , especially if you are a cheddar lover!
Example Output:
4