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: Count Iblis:  There were to be two more elements to our bargain - _ one _ , that I should lead you to Earth and the other was to be decided amongst yourselves .

elements