Definition: In this task, you're given a short article. Your job is to classify the article based on its category. Use the following classification labels, 0. World, 1. Sports, 2. Business, 3. Science or Technical. Label the text "0" if it contains information related to world. Label the text "1" if it contains information related to sports. Label the text "2" if it contains information related business. Label the text "3" if it contains science or technical related information. 
Input: Serena Williams ends Mauresmo #39;s bid for year-end No. 1 ranking Serena Williams is in love - with her new attacking game and herself. Williams moved a step closer to salvaging her season with a 4-6, 7-6 (2), 6-4 semifinal victory over Amelie Mauresmo in the WTA Championships on Sunday.
