You will be given a definition of a task first, then some input of the task.
In this task, you are given product reviews about dvds. The goal is to classify the review as "POS" if the overall sentiment of the review is positive(the reviewer is satisfied) or as "NEG" if the overall sentiment of the review is negative(the reviewer is not satisfied).

Bad lessons :( . These is beastly, useless DVD. Instructors don't count at all and don't dance to music. They dance only cumbia constantly. They have no style. Don't buy this video, you will not learn salsa. I think to return these DVD
Output:
NEG