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: Driver:  Everything in order , Mr. Dickens ?
Charles Dickens: No it is not !
The Doctor: What did he say ?
Charles Dickens: Let me say this first . I 'm not without a sense of humor ...
The Doctor: Dickens ?
Charles Dickens: Yes ?
The Doctor: Charles Dickens ?
Charles Dickens: Yes .
The Doctor: The Charles Dickens ?
Driver: Shall I remove the gentleman , Sir ?
The Doctor: Charles Dickens . You 're brilliant you are ! Completely one hundred per cent brilliant . I 've read them all . " Great Expectation " , " Olivier Twist " , and what s the other one ? The one with the ghost ?
Charles Dickens: " A Christmas Carol " ?
The Doctor: No , no , no . The _ one _ with the trains . " The Signalman " . That 's it . Terryfying , The best short story ever written ! You 're a genius !
Driver: You want me to get rid of him , Sir ?
Charles Dickens: No , I think he can stay .

story