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: 7 Iraqi Civilians Killed in US Air Strike on Falluja, 125 Iraqis &lt;b&gt;...&lt;/b&gt; . US-led forces backed by warplanes tightened their grip on the Iraqi city of Samarra Saturday, saying they had killed 125  quot;rebels quot; while Iraqi witnesses say they 

World