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: Microsoft patent is rejected, but company vows to fight back The US Patent and Trademark Office has preliminarily rejected a Microsoft Corp. patent on a system for recognizing computer files, a victory for  quot;open source quot; advocates who believe 

Sci/Tech