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: Klitschkos to go it alone WBC champion Vitali Klitschko and his younger brother Wladimir have announced plans to promote their own fights. The Ukrainian heavyweights are in a court battle to end their contract with German promoter Klaus-Peter Kohl.
