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: John Constantine:  You know , the hair on the back of my neck has been standing up since the moment I got into town .
Oliver Queen: That is probably our current problem - Damien Dhark . Ohh , you 've heard of him .
John Constantine: You watch yourself on that _ one _ , mate . He 'll make what you saw in the other realm look like a bloody gnat .
Oliver Queen: Any helpful advice ?
John Constantine: Yeah . Leave town . While you still can .

Dhark