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.

Ex Input:
Captain Jack:  Damn it ! It 's the special features , they really drain the battery .
Rose Tyler: The battery ? It 's so lame .
Captain Jack: I was going to send for another _ one _ but * somebody 's * got to blow up the factory .
Rose Tyler: Oh , I know . First day I met him , he blew my job up . That 's practically how he communicates .

Ex Output:
battery


Ex Input:
David Rossi:  What kind of knife did he use ?
Albert Franklin: A sharp _ one _

Ex Output:
knife


Ex Input:
Phil Diffy:  I do n't get it , I mean first he wins the metal , then he gives it away . I mean what 's the point ?
Keely Teslow: I want _ one _ .

Ex Output:

metal