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: these chips are good, and bad, and create moral dilemmas constantly. If wou are strong at will, or having a large BBQ go for it, but as for me, i was in the habit of bringing a new bag to work every three days, had to put in a lot of time on the treadmill to make up for it. BEWARE
Example Output: 4

Example Input: I am not sure why the 2 speciality stores in my area stopped carrying these as they were usually sold out. The cakes are 18 calories, crunchy and good--not like the cardboard taste of thicker rice cakes. Excellent as a base for PB&J, or to make an open face sandwich, or to use in pieces like a chip for dips, etc. Good price on the 12 pack with a 10 month expiration use date.
Example Output:
5