Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Big airlines feel pinch from system they created Delta Air Lines #39; decision to close its hub at the Dallas/Fort Worth International Airport and cut 2,000 jobs might seem like a big blow to the world #39;s third-busiest airport.

Business