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: Harvard Scientists Want to Clone Human Embryos CAMBRIDGE, Mass. (AP) -- Harvard University scientists have asked the university's ethical review board for permission to produce cloned human embryos for disease research, potentially becoming the first researchers in the nation to wade into a divisive area of study that has become a presidential campaign issue...
