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: NASA Puts Hands-Free Linkup to a Test Ever since two Gemini spacecraft met up high above Earth in 1965, the US space program has used astronauts for every rendezvous in orbit -- with other spacecraft, satellites, space stations or the Hubble Space Telescope.
