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: Chilean Pair Win Country's First Gold  ATHENS (Reuters) - Nicolas Massu and Fernando Gonzalez won  Chile's first gold medal at an Olympics in a five-set tennis  marathon that ended at 2:37 a.m. on Sunday.

Sports