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: I will never understand the soaps from mainstream, and sometimes otherwise great brands, who claim to have a line of "sensitive skin" products which still contain Sodium Lauryl or Laureth (as in this case) Sulfate. If you're someone who needs sensitive skin products there's a more than decent chance that you also need stuff without SLS. Boo. Refer to their bar soap, which is wonderful.
Example Output: 1

Example Input: This is a great coffee.  Its dark but not bitter, a little chocolaty, and it reminds me of an Adirondack lodge.  I can get them for a better price in a Caribou Coffee store, however.
Example Output: 5

Example Input: Ordered this and most of the boxes were stale and stuck together.  Checked the expiration date and it wasn't expired.  Starting to think they just changed the expiration date and shipped everything that went bad.
Example Output:
1