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: Consider Input: Says Barack Obama told the U.S. Coast Guard Academy that the number one threat to the military and the world today is global warming.

Output: climate-change


Input: Consider Input: Ron Klein repeatedly voted in favor of amnesty for illegal immigrants.

Output: immigration


Input: Consider Input: President Obama has spent over $2 million in legal fees defending lawsuits about his birth certificate.


Output: obama-birth-certificate