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: U.S. government cracks down on P-to-P piracy U.S. law enforcement agents raided five homes and one Internet service provider on Wednesday in what the U.S. Department of Justice (DOJ) calls the first federal enforcement action against piracy on peer-to-peer (P-to-P) networks.

Sci/Tech