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: Homer Simpson:  The marriage I have taken for granted all these years has suddenly exploded in my face . What do I do ?
Herstory Narrator: Typically , men have two choices .
Homer Simpson: I like the looks of those winged shoes . I choose flee ! Where 's an automatic sidewalk when you need _ one _ ? Fleeing did n't work . I have no choice . I must do ... whatever the other thing was !

sidewalk