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: Aaliya Kamal:  A frog once asked a centipede how is it able to walk on a hundred feet , so gracefully synchronized while the frog finds it difficult to manage even _ two _ . The centipede took a moment to analyze its own walk and was baffled . So as it tried to walk further its feet got entangled and it tripped .

feet