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: First off,  let me state that I am not a fan of decaffeinated coffee of any type.  But I often have guests over who ask for de-caf, so I gave this a try.  While I agree with some other reviewers who have stated that there is a certain "different" taste about this blend, for me, it was not a bitter taste, but instead, a good, strong flavor that mimicked the strong (real) coffee taste I enjoy.  I had a second cup, and the flavor grew on me even more, and I thought: "it really is delicious for a decaf."  The aroma isn't truly satisfying (why does this always happen with decaf?) but I think many decaf drinkers will be used to that lack.  The package had to be snipped open with scissors --this is tightly packed!-- and then I just poured it into a zip loc for storage in the fridge.  I'll stick with regular coffee, but I'm sure my de-caf loving friends will enjoy this.
Example Output: 4

Example Input: I have always purchased Star-Kist tuna but thought I would try this brand for a change of pace. The taste of the tuna was not pleasant, too much basil and other spices for me.
Example Output: 3

Example Input: it has good tast and crunchy. I bought black sesame before, it is good too. highly recommanded.
Example Output:
5