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: Not knowing Wind River the guide really did very little to help plan a trip excpet for forming a general idea of where to go and what to see and climb. On this level it fulfilled it's job, but I was hoping for much more.
Solution:
Negative