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: Irina Derevko:  There must be a dozen ways to blackmail the Alliance , all of them far less elaborate than this _ one _ .
Jack Bristow: So we can assume a secondary objective to make Arvin suffer . Someone harboring an acute hatred ... meaning it could be anyone .

ways