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: Father Brendan Flynn:  You have no right to act on your own ! You have taken vows , obedience being _ one _ ! You answer to us ! You have no right to step outside the church !
Sister Aloysius Beauvier: I will step outside the church if that 's what needs to be done , ' til the door should shut behind me ! I will do what needs to be done , though I 'm damned to Hell ! You should understand that , or you will mistake me .

vows