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: Rain, Flooding Hinders Asia's Tsunami Relief  BANGKOK (Reuters) - Heavy rains and fresh floods disrupted  aid to Asia's tsunami-hit villages on Sunday as the U.N.  refugee agency started a 400-ton airlift as part of a \$2  billion relief operation to save millions struggling to  survive.

World