Definition: In this task, you are given a statement spoken by a politician in natural language. Your task is to generate the subject of the discussion for the given statement. The subject generated is not necessarily a part of the given input. Your answer should contain one or more words.
Input: In Rhode Island, only 5 percent of ozone pollution is from local or in-state sources. . . Ninety-five percent comes from outside of our borders, particularly the Midwest.

public-health