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.
Q: Doorman: I 've been here six years , I do n't have a whistle .
John Bosley: You think you really deserve _ one _ ?
Doorman: I think you should be carrying luggage like the rest of us .
John Bosley: When you get a whistle , you do n't have to carry luggage .
A:
whistle