Detailed Instructions: 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: Marcus Van Sciver: Actually , one last problem remains . The same _ one _ we always have it seems . Blade .
Krista Starr: What abot him ?
Marcus Van Sciver: He has a habit of showing up when least expected . Thought Chthon would do the same to him .
Krista Starr: So , where do we find him ?
Marcus Van Sciver: That 's the best part ... I already have .
A:
problem