Given the task definition and input, reply with output. 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.

Mattis: Take your son , Borka . But you can not return a child to me , for I do n't have one .
Borka: What are you saying ?
Mattis: I 'm saying you can have your son back . But you ca n't return a daughter to me , for I do n't have a child .
Lovis: But I 've got _ one _ ! Even though the child 's father has gone more than a little bit crazy .
child