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: I was looking forward to using my canon powershot again as I'd misplaced my original charger while traveling. I take the charger out of the bag, not box, and plug it in only to find that it does not work - it's not charging at all. No light, no power when I put the battery back in my camera. Will ship it back very soon for a replacement or refund!
Solution:
Negative