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. 

Ex Input:
When I got my Keurig brewer last month, I bought two different types of hot chocolate.  The Grove Square Hot Chocolate is far superior.  I have so far brewed it on 6oz and 8oz with good flavor at both sizes.  The flavor is rich and it leaves no residue in the bottom of the kcup (the other brand does, maybe I got a bad batch?).  Overall, I will happily buy this one again.

Ex Output:
5


Ex Input:
Neat concept. Other contraptions to use your own coffee have prepunched holes and are designed much differently than the K-Cup. This is like a do it yourself K-Cup. However, because this consists of a disposable cup, filter, and a cap and is punched by the brewer, I would not be surprised if this mechanism infringed on Keurig's patents. Oh, and the video review submitted by the other reviewer looks suspiciously like the video on the manufacturers website :)

Ex Output:
3


Ex Input:
Parisian Cafe' was not may favorite blend for breakfast coffee.  I prefer others of the Melitta brand.

Ex Output:

3