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: Study backs Hanscom, Natick site Hanscom Air Force Base and the Natick Soldier Systems Center pump more than \$3 billion into the Massachusetts economy, and their closure would damage the state's vital technology and research cluster, according to a study released yesterday.

Business