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: U.S., EU Spar Over Airbus, Boeing Aid  WASHINGTON (Reuters) - The United States and Europe on  Wednesday filed tit-for-tat World Trade Organization complaints  over billions of dollars in subsidies for top aircraft  manufacturers Airbus and Boeing.
