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: Heavily touted by the reviews, decided to try.  Mix is good, but not great.  Probably wouldn't buy again.
Example Output: 4

Example Input: For starters, I'm not salt or msg averse. I enjoy salty food like chips, jerky, and bacon. However, these pork rinds are ridiculously salty tasting. To give you a better idea of what I'm referring to, Kettle Chips Sea Salt variety have 55 mg of salt per 1/2 oz of chips. Lowrey's pork rinds have 310 mg of sodium per 1/2 oz serving. That's roughly six times the salt content of a food considered relatively salty by most people. I read a review on here saying that they were too salty and decided to order them anyway thinking the reviewer was some salt hating baby. Boy, was I mistaken. I wish I hadn't ordered these.
Example Output: 1

Example Input: I have been buying ONE Coconut Water with a Splash of Pineapple regularly for awhile now. I like the flavor and ordering it on line is very convenient. Also, I have had no problems with delivery.  Unfortunately, IPROZON has just lost my business.  I didn't mind paying $15.00 for a case of 12.  I will not, however, pay $39.95 for a case of 12.  That is robbery.  I can walk into Fred Meyer Grocery and buy a case of 12 for $17.88.  Plus there are other sites still selling it for $15.00 per case.  I noticed IPROZON is still selling the other flavors of ONE coconut water for $15.00 for a case of 12.  So what on earth are they thinking.  I am quite unhappy with having to trust one of these other sites with my credit card information, but I am willing to do that versus paying nearly $40 for a case of 12.  Quite ridiculous.
Example Output:
5