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.
One 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
Solution is here: POS
Explanation: 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'.

Now, solve this: Not Lewis's best, but still a great book about Silicon Valley . Reading this book, you get the impression Michael Lewis just moved in with Jim Clark for a year. Sadly, these direct interaction stories and anecdotes are not as compelling as the more standard journalistic backstory: the tale of Clark's rise from abject poverty, the founding of Silicon Graphics and his eventual war with management and the board there, and the story of NetScape. The up to date stuff is less interesting, unless you are really fascinated with big sailboats. If we were rating Lewis books on a scale of 1-5, this would only rate a 3. But since other authors have to also fit into the scale, this gets a 4..
Solution:
POS