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: Office Depot: CEO out, former NFL president in Bruce Nelson has left the depot. The chairman and chief executive officer at Delray Beach-based Office Depot (NYSEL ODP) has resigned, which the office supply retailer said was by mutual agreement with the board of directors.
