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 ordered this for gifts around Christmas time. I actually was hoping to use it for our Christmas day meal. Two out of the four jars I ordered were rotten and inedible. I never did get to try it and I was very annoyed and disappointed!
Example Output: 1

Example Input: love the ease of having green natural tea anywhear any time . tastes great i love this stash green tea
Example Output: 5

Example Input: I don't know why this flour isn't available in grocery stores in the Midwest.  Typical grocer flours have a protein content much too high to give an authentic taste to such foods as pizza crust and homemade pastas.  And after years of making homemade pastas and trying to find that perfect recipe that would result in those served in the best Italian restaurants in the US and Europe, I'm happy to discover, the secret was in the 00 protein content all along.  What a fabulous difference this flour makes!  Freezes well too.
Example Output:
5