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: Online Search Universe Is Expanding To get an idea of how hot Web search is, go talk to Raul Valdes-Perez, a Carnegie Mellon University professor who is leading a search technology start-up called Vivisimo Inc.
