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:  How you feeling ?
Kate Beckett: Where are we ?
Richard Castle: Ripton , Vermont . Population , 588 . Couple of short hours , we will be crossing into Canada .
Kate Beckett: Turn around . We have to go back .
Richard Castle: What ?
Kate Beckett: It was Montgomery . He made that recording of Bracken , the _ one _ that Smith has been looking for .
Richard Castle: Captain Montgomery ? How can you possibly know that ?
Kate Beckett: Castle , when I first met him , he was saying things about my mother 's murder . Things that I did n't understand at the time . But he specifically mentioned a cassette recording .
Richard Castle: And Smith said that the person who made that recording was a former associate of Bracken 's .
Kate Beckett: Yeah . It adds up .
Richard Castle: Okay , but if Montgomery did have that kind of evidence , why would n't he have just given it to Smith ?
Kate Beckett: I think he gave it to my mom . He asked if I had been through her belongings , if I came across a cassette .
Richard Castle: Kate , if he gave her the tape , you would've found it . You 've been through her things a million times .
Kate Beckett: Castle , I did n't know what I was looking for . The answer is there . I know it . I have a box of her things in my apartment . We 've got to go back .
Richard Castle: That 's crazy . They 'll be staking out your place .
Kate Beckett: Not Bracken 's guys . Not now .
Richard Castle: And how about Donovan 's guys ? He 'll have cops up there . There 's no way we 're getting near that place .
Kate Beckett: We will . We just need a little help .

recording