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: Hospital Santa:  A Padlock ?
Security Guard J.Bailey: His mom used _ one _ when she kept him in the attic ... it helps him feel at home , especially at Christmas , every year around this time he tries to escape

Padlock