In this task, you are given books product reviews in English language. The goal is to classify the review as "POS" if the overall sentiment of the review is positive or as "NEG" if the overall sentiment of the review is negative.

Let me give you an example: Hopeful for those who seek harmony in the world . I wouldn't recommend this to anyone who thinks that religious wars, repression of individual spirits or rape of the earth are good things. Those who seek peace, harmony, celebration of each of us and respect for our earth will find this hopeful
The answer to this example can be: POS
Here is why: The overall sentiment of the review is positive as the reviewer mentions positive expressions such as 'hopeful', 'will find this helpful' etc.. Hence, the label is 'POS'.

OK. solve this:
Unwaiveringly BIASED and UNBALANCED . Throughout this book Mr. Shulman denigrates the contribution of the Wright Brothers. His bias is so prevalent throughout the book that I found myself shaking my head as I read blatantly contradictory statements within 5 lines of each other. The author's opinions and accusations are either based on his limited research or his intentional omission of fact. If you're even considering buying this book, I would direct you to the author's own words following a completely inane paragraph of conjecture about Orville Wright............"Or perhaps not." That about sums up this biased inaccurate ploy concealed in the history section
Answer:
NEG