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: Survey: Porn to Boost Wireless Web Services  AMSTERDAM (Reuters) - Mobile phone users around the world  will spend \$1 billion a year on pornography sent to their  handsets by 2008, which may boost the wireless services sector  much as it fueled growth in the fixed-line Internet, a market  research firm said.

Sci/Tech