Instructions: In this task, you are given Yelp reviews. The task is to classify a review as "POSITIVE" if the overall sentiment of the review is positive or as "NEGATIVE" if the overall sentiment of the review is negative.
Input: Poor customer service. Waited in line with 5 other customers, while 5 employees didn't even acknowledge one single customer. One of them was the store manager. His name was Ruben. This place is a joke.
Output:
NEGATIVE