You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I've read this book with much expectation, it was very boring all through out the book
Solution: Negative
Why? Review writer does not like the book because it was boring, therefore it is a negative review.

New input: Logically enough Professor Herrick begins with an overview of his subject. He concludes with some of the better known modern rhetoricians. In between these two chapters he traces the history of the field and the various contributors. Timelines in the chapters enable the reader to see where the content of that particular section fits in the overall scheme. Sources are clearly identified throughout the book. Sidebars are another asset found in each section.The glossary in the back of the book is a ready reference for students seeking to quickly understand a term. Herrick seeks to combine modern example with ancient methodology in some places. Generally speaking this book introduces the subject well. It is clear and comprehensive. I have used with favorable results as a textbook when I was teaching in Massachusetts.
Solution:
Positive