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: Col. Steve Austin:  You know Oscar , you tell that joke about three times a week .
Robot: It 's the only one I know .
Col. Steve Austin: Yeah , but if you learned another one , then you 'd have _ two _ .

joke