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: Groucho Marx:  What do you consider a funny joke ?
Aki Aleong: Well , um , I was reading _ one _ the other day , and , um , well ... What did the two flies say , after they flew off of Robinson Crusoe ?
Groucho Marx: I haven't the faintest idea .
Aki Aleong: Well , they said , " So long . See you on Friday . "

joke