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: Javier Esposito:  According to his fingerprints , his name is Donald Hayes . Navy veteran , served in Desert Storm , and he 's been a dock worker since ' 94 .
Kevin Ryan: Somehow still employed as _ one _ . Our victim , Donny Hayes . Currently clocked in and on duty at the East Side docks .
Richard Castle: Which either means he 's an incredibly dedicated zombie ...
Kate Beckett: Or he 's a suspect in our murder .

worker