Definition: In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.
Input: Oliver Lang:  If you want to be his father , you will walk to your house , sleep in your bed , teach your classes , and live your life !
Michael Faraday: What are you doing ? How many people are you going to kill ?
Oliver Lang: Well , if I see any strange cars on my street , if you feel compelled to talk to someone , a federal agent perhaps , I imagine we 're just going to kill _ one _ .

agent