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: Ghana a Model for African Elections Urged to wield the power of the thumb, #39; #39; Ghana #39;s people exercised it in force Tuesday - pressing ink-moistened thumbs to ballots in an presidential election marking the 

World