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: Blast in Gaza Home of Hamas Man Kills 4 - Medics GAZA (Reuters) - An explosion tore through the home of a senior Hamas militant in Gaza on Wednesday, killing at least four people and wounding him and about a dozen other Palestinians, medics said. 

World