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: Olivia Benson:  We 're hiring another detective ?
Donald Cragen: Well , we 're short - staffed . He 's a good guy , out of warrants . He starts tomorrow . You have a problem with that ?
Olivia Benson: Well , it 's hard enough showing one rookie the ropes and now we have _ two _ . I mean , what is this , a day care center ?
Donald Cragen: Elliot 's not coming back , Liv .
Olivia Benson: It takes me twice as long to explain the job to somebody else as it does to do it myself .
Donald Cragen: It 's not your call . Now you want to be here , you 're gon na have to start working with other detectives . All right ? Let him go . And you can start by packing up his desk . We ca n't keep it as a shrine .

rookie