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:
I love this candy.  After weight watchers I had to cut back but still have a craving for it.

Ex Output:
5


Ex Input:
Great price for an excellent chip. At about 80 cents for a 2 ounce bag these are a bargain as well as a very tasty chip. Everyone I've let try these has been impressed and commented on how good they taste. I've yet to find a Kettle chip that disappointed!

Ex Output:
5


Ex Input:
I recently received the variety packs of popchips. i have them delivered to work and everyone just loves them.  i tried one flavor ...delicious, next flavor.... excellent, next flavor... oh my goodness, even better and it gets better and better.  Best snack in recent memory.  :)

Ex Output:

5