Teacher: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. 
Teacher: Now, understand the problem? Solve this instance: New Sony Walkman Challenges iPod Mini Sony #39;s new Walkman NW-E99 and NW-E95 take aim at Apple #39;s iPod Minis. The new Walkmans offer up to 70 hours of battery life -- significantly more than the Mini -- though they have less memory than the market leading mid-range players.
Student:
3