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:
most of the nuts in these bags were so old they had turned black totally worthless will never order again

Ex Output:
1


Ex Input:
I've tried it with both my cats, several times. Every time they eat this, and other Whiskas Temptations products, they vomit within minutes. They LOVE it, they WANT it, it's CHEAP but it makes them puke, so, I'd consider this a bad purchase.

Ex Output:
1


Ex Input:
We purchased these for our son to give out when his baby boy is born.  They make a very nice announcement of the new arrival.  They are however very hard if you actually want to chew the bubble gum.

Ex Output:

4