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

Problem: though I'm not a native english speaker, I didn't find it difficult to read it. It clearly represents a period in american history which probably many would like to forget about. Sorry for high school students who couldn't understand it, something needs to be done in order to improve their reading comprehension and interest in their own culture..
Solution:
Positive