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: Arab world #39;s reaction to Bush #39;s reelection Leaders in the Arab world have congratulated incumbent US President George W. Bush on his re-election. Arab League chief Amr Moussa hopes Bush will actively push forward the 

World