You will be given a definition of a task first, then some input of the task.
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.

Hayden Chase: If anything changes , you call me .
Sydney: Did you have any idea she and Dixon ...
Jack Bristow: No ... But then I tend to miss those kinds of details .
Sydney: What are you talking about ? You 're the master of details .
Jack Bristow: Really ? I 've gone over the details a thousand times in my mind . Each _ one _ , added up to the same conclusion . That your life was in danger , and your mother was the lethal threat .
Output:
details