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: Psycho Pink:  Certainly you do n't think I 'd double - cross you .
Psycho Yellow: You 'd double - cross your own mother ... that is , if you had _ one _ .
Psycho Pink: Hey , no need to get personal just 'cause I had the brains to pull this off .

mother