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
I was shipped what appeared to be a refurbished charger. On top of the fact this item was refurbished, it did not work. As if the upset and inconvenience of receiving a product that does not work wasn't enough, once I returned this item to sender they had the audacity to charge a "restocking fee". I certainly won't ever purchase from this seller ever!
Answer:
Negative