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: DS Ray Carling:  Guv . You know I would n't go behind your back , do n't you ?
Gene Hunt: It 's all right , Raymondo , I know I can trust you . That hit and run was attempted murder , the lad knew what was on the missing note . Something else . I 've got a file , physical evidence that could nail Lafferty , but I ca n't keep it here , not at the moment . It 's in a safety deposit box on Talbot Street . Box number one sixteen .
DS Ray Carling: _ One _ sixteen .
Gene Hunt: Just in case I end up on the wrong end of a car accident .
DS Ray Carling: Right , Guv .

number