Given the task definition, example input & output, solve the new input case.
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.
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
Output: POS
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'.

New input case for you: Style of writing is painful . Just start reading the introduction, or flip to anywhere in this book to see all you need to know about it's readability: a bit rough to say the least. For example, in the introduction, the concept of carrying binary data in a shorter period of time on a wire than several measured pulses was presented in such a confusing manner that I was forced to read it 4 times to understand what was already a simple and understood concept to me. The excessive formality of this book is a killer.. It reads at times like a formal mathematics proof book, however, at other times it is a bit more readable. Like people said.. use this for reference.. not for a textbook
Output:
NEG