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: Bombs explode at Bueno Aires banks BUENOS AIRES - Two homemade bombs have exploded at two banks in Buenos Aires, killing a security guard. The explosions occurred near ATM machines in branches belonging to Citibank and Banco Galicia, shattering windows and the building facades.

World