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:
This Melitta Riviera Sunset blend is a nice, and light coffee that is suitable for anytime of day.  It's particularly great for drinking at night because it is decaffeinated.  The texture is nice, and does not have an acidic taste or anything.  It's meant for casual drinkers.  I do prefer my coffee darker, WITH caffine, but I did enjoy this blend.  I would recommend giving this a try and judge for yourself.

Ex Output:
4


Ex Input:
great price for the 24-count, my dad will love this gift since he loves hot chocolate and drinks about three cups a day, quick to receive.

Ex Output:
5


Ex Input:
These taste really good, and they are moderately low-calorie. They are also wheat-, dairy-, and gluten-free, which is wonderful for those with allergies.  Unfortunately, I could probably eat all of them in a single sitting; they are smaller than the average bar! Of the 180 calories per bar, 80 of those calories are from saturated fats. In the list of ingredients it states "chunks may contain traces of milk protein due to manufacturing equipment."  I'm not sure what that could mean to someone who is allergic to milk, but I probably would not want to take any chances.  The normal retail price of a package of 5 Whenever Bars hovers around $3.90.  Even at the Amazon.com price, a 6-pack (total 30 bars) would cost $19.62, which breaks down to $3.27 for 5 bars When this package is empty, I am not likely to buy more.

Ex Output:

3