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: Freshman Walker gives Irish running game a boost SOUTH BEND, Ind. -- Running back Darius Walker didn #39;t play last week against Brigham Young, but Notre Dame coach Tyrone Willingham said the reason had nothing to do with any thoughts of holding Walker out as a freshman to preserve a year of eligibility.
