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: U.S. to Poison Prairie Dogs in South Dakota (Reuters) Reuters - Wildlife workers have begun a program to\poison thousands of prairie dogs in the grasslands of South\Dakota to stop them from moving onto private ranch land parched\by drought, a federal official said on Tuesday.

Sci/Tech