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 was amazed at how good this is for canned fruit (which I normally won't touch).  In particular I adore papayas and mangos.  The fruit juice instead of syrup is also very nice.  The easy pull-top on the can makes this a great item to stash in my desk drawer at work, so that I can have a fruit snack easily even if I was too busy or forgot to bring lunch.  So far I haven't gotten a can that had any problems.  The watermelon isn't crunchy - of course not! - but it's good, and certainly not "slimy".

Ex Output:
5


Ex Input:
These are decent, but if you want a realllly good salt and vinegar chip, try Boulder's Salt and Malt Vinegar chips.  THOSE are awesome.

Ex Output:
3


Ex Input:
i ordered this on 8/29/10, and it didn't ship out until three and a half weeks later. it's 10/12/10 and i still haven't received it yet. next time, i plan to order from a merchant who can fulfill it in a reasonable timeframe.  as far as the product is concerned, i do like that the similac liquid formula in the 32oz size doesn't contain BPA. i was really upset when i researched and discovered that the single-use ready-made liquid containers and large powdered containers both contain BPA. i would expect more diligence from similac to be BPA-free in all of their packaging.

Ex Output:

1