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: Thousands celebrate Zambia #39;s independence Lusaka - Presidents from three African countries have laid wreaths to celebrate Zambia #39;s 40th independence anniversary. Fighter jets flew overhead in a display of military might not seen in at least a decade.

World