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: Pfizer finds heart attack risk with Celebrex, plans to continue to &lt;b&gt;...&lt;/b&gt; Celebrex, the nation #39;s leading painkiller, raises the risk of heart attack when taken at very high doses, the drug #39;s maker said Friday in the latest blow to a class of powerful and widely touted drugs.

Business