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: It wasn't a bad purchase at just $9.99 through Warehouse Deals fulfilled by Amazon and shipped for free, but took 2 stars off because it wasn't a freshness issue but Cracker Jacks® just don't taste the same like when I was a kid back in the 1980's.
Example Output: 3

Example Input: Not always available at our local stores. I love them. They are especially good watching football games, with you favorite malt beverage. This is a good deal, and super fast delivery, too. The nuts were fresh and tasty, as always.
Example Output: 5

Example Input: This product was very good when I began buying it but lately it is terrible. There is no taste at all. That's the reason I no longer purchase this item. Thank you.
Example Output:
1