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: Chief Inspector Stanislaus Oates:  What exactly are you up to ? Or is it a state secret again ?
Albert Campion: I 'm taking the short road as opposed to the long road .
Chief Inspector Stanislaus Oates: Thank you very much , that 's much clearer .
Albert Campion: Or to express it in another way , it is the one occasion in a _ hundred _ when publicity would be catastrophic , official police involvement undesirable and it falls to the gifted private individual to take responsibility .
Chief Inspector Stanislaus Oates: And you are taking responsibility for what ?
Albert Campion: The safety of a great national treasure , coupled with a spot of drastic eradication .

occasion