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: Supporters of Sistani Fired Upon, 20 Dead: Witness  NAJAF, Iraq (Reuters) - Supporters of Iraq's top Shi'ite  cleric Grand Ayatollah Ali al-Sistani were fired upon in the  town of Kufa on Thursday and 20 people were killed, a Reuters  photographer said from the scene.

World