TASK DEFINITION: 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
PROBLEM: A mechanical action-comedy whose seeming purpose is to market the charismatic Jackie Chan to even younger audiences .

SOLUTION: NEG

PROBLEM: What 's missing in Murder by Numbers is any real psychological grounding for the teens ' deviant behaviour .

SOLUTION: NEG

PROBLEM: ... a fairly disposable yet still entertaining B picture .

SOLUTION:
NEG