Part 1. Definition
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Part 2. Example
I've read this book with much expectation, it was very boring all through out the book
Answer: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Part 3. Exercise
Delivery time was excellent. The comments others have made about the boot running narrow are correct. I ordered a wide but while the boot fits ok it does feel tight in the width. The first couple of times I wore it on short hikes it was comfortable, but on a 3 hour hike it rubbed off the skin on the side of my left heel. Also, the boots have a very stiff sole. However, walking in wet snow the boot remained perfectly dry. I'm new to hiking so perhaps this is normal, but the boot leaves something to be desired as far as foot comfort goes.
Answer:
Positive