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: African Union Probes Cease-Fire Violation (AP) AP - This small village of mud and straw huts lay ruined and abandoned Sunday, the ground charred, after residents said Sudanese soldiers attacked with a warplane and helicopters, driving farmers from their homes days before a U.N. deadline to end the violence in the ravaged Darfur region.

World