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.

Obama spent $7 billion to bring electricity to Africa, failed miserably.
energy

"Bill McCollum holds the same position on (embryonic stem cell research) as Barack Obama."
abortion

Warren Buffett called credit default swaps financial weapons of mass destruction. And Greene was the first individual to use them.

candidates-biography