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
Ms. Perry's depiction of post-traumatic head injury is completely irresponsible. She apparently did no research at all. Amnesia of the type she describes here does not exist. Thus, the underlying premise of this book unbelievable, even infuriating, to anyone with the most basic knowledge of brain injury. In addition to this, Monk's investigative skills are virtually nonexistent. His interviews with informants and suspects are fragmentary and incomplete. Suspense is not built, action is nearly absent, and the eventual solution is anticlimactic. Laden with turgid prose, this book is absolutely dreadful.
Answer:
Negative