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 may be all natural but it didn't have a natural taste to me.  The can size is small and the calories were more than I thought there should be.  I like the mild carbonation ok but I wouldn't switch from orange juice.
Example Output: 3

Example Input: I have a recurring shipment of this product each month.  Every month when the boxes arrive they are barely in one piece and VERY mangled.  Last month one of the cases of water had to be repackaged before it arrived and it was a day late.  I suggest using a more sturdy box for shipping.  The water product is fine ... it's just the shipping packaging I have a problem with.
Example Output: 2

Example Input: i bought these for my pittie who is on a sweet potato and fish diet.  i thought they would be a little larger, but they are more suitable for a smaller breed dog.  they were even a little small for my pug who gulped them down and i was afraid she would choke on them.
Example Output:
3