You will be given a definition of a task first, then some input of the task.
In this task, you are given sentences from movie reviews. The task is to classify a sentence as "POS" if the sentiment of the sentence is positive or as "NEG" if the sentiment of the sentence is negative

As an introduction to the man 's theories and influence , Derrida is all but useless ; as a portrait of the artist as an endlessly inquisitive old man , however , it 's invaluable .
Output:
POS