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: Giles:  I was ten years old when my father told me I was destined to be a Watcher . He was _ one _ , and his , uh , mother before him . And I was to be next .
Buffy: Were you thrilled beyond all measure ?
Giles: No , I had very definite plans about my future . I was going to be a fighter pilot . Or , possibly a grocer .

Watcher