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: What can i say??  They are wonderful, and the highlight of each weekend.  OHHHhhh  - use soda water for the liquid !  even better !!!
Example Output: 5

Example Input: For those who love salt and vinegar potato chips, this is the one to choose. The flavor is zippy and tart, with no unpleasant chemical aftertaste like the less "natural" versions of this snack. The 2-ounce bags are just right to share at lunch. The chips are a little greasy, and that's why I've given them 4 stars instead of 5.
Example Output: 4

Example Input: For anyone liking a weaker coffee,this brand would be fine, but I prefer a stronger coffee so I wouldn't choose this brand again for that reason.
Example Output:
2