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: Serena Says She's 90 to 95 Percent Back (AP) AP - The first thing you notice is the scar. It's a jagged 2-inch line running just above Serena Williams' left knee, a reminder of the surgery that sidelined her for the last half of 2003 and the start of this season.

Sports