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: American hits the airwaves With its major competitors mired in a struggle for financial survival, American Airlines yesterday kicked off a multimillion-dollar advertising campaign aimed at grabbing market share and capitalizing on its own turnaround.
