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.

Example Input: Switch Orange Tangerine is ok but not what one might expect. First of all, there is more apple and grape juice in here than orange or tangerine (this will not be a surprise if you are familiar with the other flavors as that is also true with them). Switch basically is carbonated juice. The taste isn't a bad and it is supposed to be healthier than soda (which can be debated). It is a reasonable drink for snacks but if you are going to need several if you are actually thirsty.
Example Output: 3

Example Input: It makes good tasting gluten free food... but... like most gluten free food, it's expensive and it's got a slight grit to it. I've made biscuits, waffles, and pancakes with it... a friend made some awesome banana bread with it. it's very good for gluten free...
Example Output: 4

Example Input: These were nasty, they were so greasy and too rich for my blood, plus they lacked major flavor, no spicy jalapeno flavor at all. I was so dissapointed in these chips, I am always hearing great things about these chips but I am telling you, yuck yuck yuck. Give me pain chips any day. Maybe there is a better kettle chip brand out there but I am staying clear from these chips. I wish I could give these zero stars if I could.
Example Output:
1