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: Japan to protest to China over intruder submarine A submarine that intruded into waters off Japan earlier this week has been identified as Chinese, Japan #39;s top government spokesman Hiroyuki Hosoda said on Friday, adding that Tokyo would protest to Beijing.
