TASK 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.
PROBLEM: Mitchell International Airport is the the third busiest airport in the world and the number one busiest in the country.

SOLUTION: transportation

PROBLEM: Says George Soros and Bill Gates are funding a bioweapons lab in Sierra Leone that caused the Ebola outbreak.

SOLUTION: ebola

PROBLEM: U.S. forces in Iraq and Afghanistan include a "few thousand that are still green card holders who are not even citizens of this country."

SOLUTION:
military