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 bought the plug package made by Apple for my Mac computer. It is very cleverly made to fit well on the current adaptor and an excellent travel accessory. I only wish that it were priced more reasonably in a package for each area of the world rather than a package for plugs used in many different countries, for a price to equal that package. As I am traveling only in Western continental Europe, I do not need several of the other plugs included, which seems an unecessary expense as well as being wasteful and makes for items I don't need.
Solution:
Positive