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: Wheel Woes For Mars Rover (AP) PASADENA, Calif. (AP)  The Mars rover Spirit has developed a problem with one of its six wheels, but NASA officials said Tuesday they believe the robot geologist can continue working. 
