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: In my office, and for me personally, this is the smoothest and best tasting coffee you can buy for your Keurig machine. Great price too!
Example Output: 5

Example Input: I bought a new bread machine and bought this collection of bread mixes as well as some single mixes to try it out.  The single mixes worked well as they included yeast packaged separately in the mix.  My machine states clearly not to get the yeast wet, to put it on top of the flour away from the water.  The mixes in this collection have the yeast in the flour, not packaged separately.  The bread failed to rise at all.  Why would they package the yeast separately in the single mixes and not in the multi packs?  Along with the Heartland Collection I also purchased the Baker's Choice Collection.  I am throwing them all out.  Don't waste your money.
Example Output: 1

Example Input: Despite coming in an extremely large box, I found this to be great value. All the bags were preserved with a reasonable expiration date that is months away. I'd definitely recommend.
Example Output:
5