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.

Input: Consider Input: These chips are the only ones I found to be tasty and healthy. They have fewer fat calories plus higher fiber for those who want good taste and nutrition--the perfect blend!

Output: 4

Input: Consider Input: The Good: Walker shortbread cookies are my favorite, I love them. I bought the highlanders and each set of cookies came individually wrapped with two cookies each. If this were the end of it, a five star review. The Bad: Unfortunately, Amazon shipped them in a box that was about the same size as the container they came in from the Walkers cookie company. After UPS was through with the shipment, my cookies were reduced to crumbs. I contacted Amazon about this problem without ever receiving a response. Since I bought these "Shipped and Sold by Amazon", I won't be purchasing these cookies from Amazon again.

Output: 2

Input: Consider Input: in my opinion these are heads and twos above any pickle that you normally find at your local grocery store. a lot of nice, sweet, pickle flavor. I probably won't buy again off of amazon because of shipping charges, but if i ever see them locally, i'll buy a bunch.
Output: 4