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.

Example Input: Jack Bauer:  How do I find the vials ?
Stephen Saunders: Each _ one _ is tagged with a GPS locator chip , so I can track them up to the moment before it 's released .
Jack Bauer: Where are the locator codes ?
Stephen Saunders: In my head .
Jack Bauer: You memorized all eleven ?
Stephen Saunders: Yeah , get her out of there
Jack Bauer: bring Jane out from the hotel .
Example Output: vials

Example Input: Freeman Lowell:  Hey , wait a minute , wait a minute ... I do n't think you guys understand what this means , please do n't blow up the domes .
Andy Wolf: Which ones going first ?
Marty Barker: Lets hit _ four _ first .
Freeman Lowell: But they 're not disposable !
John Keenan: We do n't have any choice Lowell .
Freeman Lowell: But they 're not replaceable !
Example Output: domes

Example Input: Jason:  You 're stupid !
Melissa Robbins: You 're stupid !
Jason: You 're stupid !
Melissa Robbins: What are we arguing about ?
Jason: Who is stupider .
Melissa Robbins: No , we need to get a video camera .
Jason: Why do n't we build _ one _ ?
Melissa Robbins: That 's stupid .
Jason: You 're stupid !
Melissa Robbins: You 're stupid !
Example Output:
camera