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: Afghans Mark 9/11 Anniversary with Mixed Feelings (Reuters) Reuters - U.S. forces and\their allies in Afghanistan remembered the third anniversary of\the Sept. 11 attacks in somber fashion Saturday, conscious that\the war on terror will be a long one.

World