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

Example Input: I've tried all three new 'Dark' offerings from Gevalia and I think this is the best one from the three. Gevalia finally came up with coffee worth serving to your guests. Coffee has an earthy bold taste with little to none bitterness and no metallic after taste; it actually leaves a nice smooth tasty chocolaty after taste.  The pack comes with 12 big T-discs that will brew 8 ounces of coffee. This coffee will delight those who love the darker roasts.  Update: I am on my 5th cup of this coffee and it was really grown on me (changing from a 4 to 5 stars); it is quite tasty and smooth. This is one coffee that will truly satisfy the void that Sbux left. There will be some that will say that this is not the same as Sbux and it isn't! Try the coffee and give it a fair taste without trying to compare it to anything else you may find yourself quite surprised at the findings.  Highly recommended and definitely will be buying this one again.
Example Output: 5

Example Input: I started buying this after I noticed my 1 year old cat was already starting to lose his "spunk" so I decided it was time to start buying him "real" cat food...not the garbage in the super markets. I found this at the pet store out of the other million choices, and I'm sure there are other brands that are just as good but this is the one I went with to try first and it was a great purchase. My cat has been on this for the past 8 months and he's now just has active as he was when he was a kitten and his coat has became sooo soft. Mainly, he loved the taste even more! I highly recommend this brand to all my friends and family for their animals!
Example Output:
5