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: Mexico City Mayor Delivers Fourth Address (AP) AP - Mexico City Mayor Andres Manuel Lopez Obrador launched a spirited defense of his administration and dismissed looming scandals as political vendettas Friday during what was likely to be his last state-of-the city address. The mayor vowed he was "not going to negotiate my principles."

World