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: Richard Castle:  Come on , Captain , this is insane . I did n't do anything .
Captain Victoria Gates: Well , we still need to investigate , and you know that . So let 's start with your relationship to the victim .
Richard Castle: Okay . I did n't have _ one _ .
Captain Victoria Gates: Then any idea on how your fingerprints ended up at the crime scene ?
Richard Castle: Well , we went over that . CSU made a mistake .
Captain Victoria Gates: They say they did n't . Castle , if you knew ...
Richard Castle: I did n't know her !
Captain Victoria Gates: She was seeing someone . Someone her roommate described as handsome and rich .
Richard Castle: I 'm flattered , but it was n't me .

relationship