Instructions: 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. 
Input: I loved this product, and it was better than what I thought it was going to be. My favorite was teh salt and vinger flavor (yum yum) but I hated the cheddar, and salt & pepper ones.
Output:
4