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: Kate Beckett:  Seriously ?
Richard Castle: Oh . I can explain .
Kate Beckett: Please do n't .
Richard Castle: Listen , he was pacing back and forth in his apartment . And he kept looking towards the bedroom . And then he slept on the couch . Now why would you sleep on the couch when you have a perfectly good bed ?
Kate Beckett: I could ask you the same question .
Richard Castle: I 'll tell you why . Because he had a dead body in there . Ryan and Esposito did n't find it because he hid it .
Kate Beckett: Do you realize what you 're doing ? You 're obsessing over this because you have nothing else to obsess about . Why do n't you just come with me to the precinct , focus on a real murder instead of wasting your time on an imaginary _ one _ ?
Richard Castle: Well , actually , I was thinking about just , uh , trying to do some writing today .
Kate Beckett: Okay . As long as by " writing " , you do n't mean staring out the window and ogling at your neighbors .
Richard Castle: No , of course not . That would be immoral and intrusive .
Kate Beckett: Yeah , like you 've never done that before .

murder