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: Miner shares the wealth BHP Billiton, the world #39;s biggest miner, will buy back as much as A$1.5 billion ($1.6 billion) of its Australian stock as part of a plan to return profit from soaring commodity prices to investors.
