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: Gangster shot Williams #39;s sister, court hears Los Angeles - A  quot;trigger-happy quot; street gangster killed the sister of US tennis stars Venus and Serena Williams as he defended a Los Angeles crack house from gangland rivals, a court heard on Monday.

Sports