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: US Airways Flight Attendants Authorize Strike WASHINGTON, Dec. 13 /PRNewswire/ -- Flight attendants at US Airways overwhelmingly authorized their union to engage in CHAOS(TM) strike-related activities should a federal bankruptcy court permit management 
