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: Greenspan Warns on Baby Boomer Benefits Federal Reserve Chairman Alan Greenspan said Friday that the country will face  quot;abrupt and painful quot; choices if Congress does not move quickly to trim the Social Security and Medicare benefits that have been promised to the baby boom generation.

Business