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: Nigerian soldiers head to Sudan's troubled Darfur region (AFP) AFP - A US Air Force transport plane landed at El-Fashir airport in northern Darfur bringing the first Nigerian contingent of a reinforced African Union truce-monitoring force to the troubled region, officials said.

World