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: Captain Lee 'Apollo' Adama:  So ... um ... that bum knee of yours is looking pretty good . And the other _ one _ 's not too bad either .
Lt. Kara 'Starbuck' Thrace: Lee , if you want to ask me to dance , just ask .
Captain Lee 'Apollo' Adama: You want to dance ?
Lt. Kara 'Starbuck' Thrace: Me in a dress is a once in a lifetime opportunity .

knee