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: Sprint-Nextel Deal Talk Sparks Concern  NEW YORK (Reuters) - The prospect of a deal between Sprint  and Nextel Communications sparked concerns on Friday about a  shrinking U.S. market for mobile network equipment, sending  shares of Nextel's key supplier Motorola Inc. &lt;A HREF="[Link] target=/stocks/quickinfo/fullquote"&gt;MOT.N&lt;/A&gt; down  almost 8 percent.

Business