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: Tennis: Only the elements slow Federer HOUSTON Roger Federer was at his best after midnight. Too bad hardly anyone was there to see it. With less than 500 fans remaining in the stands in the early Thursday morning after a deflating day of rain 
