Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: I bought this book planning on checking the Feng Shui for my house for the year 2002 and find out after reading several chapters that Lillian Too assumes your house was built since 1984 or has had major renovation during this period. If this is not the case then the rest of the book (i.e. the most important part) is totally useless. Buy another book, any book except this one.
Solution:
Negative