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: Robo-servants set to sweep into homes com October 20, 2004, 12:46 PM PT. There were over 600,000 household service robots in use worldwide in 2003, and more than 4 million new units should join them over the next three 
