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: Henrietta 'Hetty' Lange:  I imagine you 're still smarting from where the Chief of Police just ripped you a new one .
Marty Deeks: How 'd you know that ?
Henrietta 'Hetty' Lange: Because I just experienced something similar from my Director . It seems we need to co - ordinate our operations a little better . My boss wants to assign a liason officer from LAPD . And your boss thinks it 's a good idea .
Marty Deeks: Yeah . You guys do n't need a liason officer .
Henrietta 'Hetty' Lange: I agree . I told him we already have _ one _ .

officer