Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: China mine blast toll rises to 50 as hopes for missing workers &lt;b&gt;...&lt;/b&gt; CHENJIASHAN MINE, China : The death toll from a blast in a north China coal mine rose to 50 after more than 20 bodies were found as hopes of finding alive another 116 trapped workers all but vanished.

World