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.

O'Nan rights a wrong.......... . Stewart O'Nan has corrected a major oversight by writing so comprehensively about a topic surrounded by myth and folk legend. Apparently, the story of the Hartford circus fire of 1944 has never been told in a book, but Mr O'Nan has dived into the deep end of the myths and legends and surfaced with a factual, well-researched, and eminently readable tale of the tragedy. Covering all aspects of the fire and its' aftermath, Mr O'Nan debunks the stories told as truth but bearing none, reveals new and unsung heroes, and lovingly examines the fate of Little Miss 1565, the lovely, unclaimed child who lay so long in a grave with only a number to mark her presence. This is an exciting read, filled with the thrill of the circus, the horror of a fire out of control, the fate of survivors, and that of victims ....... both those who lived and those who didn't. While Mr O'Nan has moved on to the Boston Red Sox in his book with Stephen King, FAITHFUL, this was his first foray into non-fiction, and he has done himself proud. This is a great story, told well, and with care
Output:
POS