You will be given a definition of a task first, then some input of the task.
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.

Great concepts that go nowhere. . I zipped through the first 100 pages of this book unable to put it down. Unfortuneately the author seems to run out of gas after that. The main character just goes on a big, boring sight seeing tour. It reminded me of that show on the Travel Channel where that girl visits hotel after hotel fawning over the interior design. There is not a hint of conflict until the final pages and then it's very short-lived and quickly followed by one of the worst non endings I've ever read. The book just stops. Not a hint of resolution or even a cliff hanger pointing to a sequel. It's a shame because Grimsley had some great concepts to work with. In my experience novels that mix technology with magic usually fail at both, but Grimsley had a workable foundation he could have developed into something unique if he had focused on the SF concepts instead of minutiae. Once in a while the characters stop admiring the drapes long enough to notice the GIANT FREAKIN' PORTAL BETWEEN TWO WORLDS--but enough about that. Gee, what a lovely sofa..
Output:
NEG