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: Advance Reported in Nonaddictive Painkiller While the opium poppy is the source for compounds needed to make potent painkillers such as oxycodone and other medicines, it is also the source for the illegal drug heroin.

Sci/Tech