Detailed Instructions: 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].
Problem:Olympic training helped end siege Anti-terrorist training received by Greek police ahead of this year #39;s Olympic Games helped resolve the Athens bus hijacking, the government has said.
Solution:
World