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: Young Murph:  Dad ?
Cooper: Sorry , Murph . Go back to bed .
Young Murph: I thought you were the ghost .
Cooper: There are no such things as ghosts , babe .
Young Murph: Grandpa says you can get ghosts .
Cooper: Maybe that 's because Grandpa is a little too close to being _ one _ himself . Go back to bed .

ghosts