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: Black: Quits As Hollinger Inc. CEO Ahead Of Investor Action  quot;Super Tuesday quot; in Toronto. Conrad Black gave up his titles as chairman and chief executive of Hollinger Inc. The holding company, based in Toronto, Canada, has voting control over newspaper publisher Hollinger International (nyse: HLR - news - people ).

Business