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: Volunteers spread word of Firefox By day, Alexander Vincent is a mild-mannered secretary for a Vallejo real estate broker. By night, he #39;s an online crusader protecting users of a new Internet browser from glitches and security bugs.
