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: Citigroup #39;s ex-investment head may face SEC action Citigroup Inc. (CN: Quote, Profile, Research) on Friday said US securities regulators are thinking of recommending enforcement proceedings against the former head of Citigroup Global Investment Management.
