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: The first day I bought this, it didn't work. But then the next day, it worked a gain. I continued to use it for 1 month, and it didn't work completely. Many people used it and said that it is a bad product with errors.
Solution:
Negative