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: The five Guantanamo detainees swapped for Bowe Bergdahl are back on the battlefield.

Output: afghanistan


Input: Consider Input: Members of Congress passed a pay raise for themselves of $10,000 over two years even as they voted not to raise Social Security benefits for 2010 and 2011.

Output: medicare


Input: Consider Input: Our population has grown from about 1 million in the 1970s to almost 7 million today.


Output: population