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: The Doctor:  Those shields wo n't hold them there for long .
Briggs: They 'll last until we 're back to Earth .
The Doctor: And then ?
Briggs: There 's only a few of them : our security men will cope with them .
The Doctor: They 're an invasion force , Earth is where they want to go . There are considerably more than a few on board .
Adric: How many of these silos are you carrying ?
Briggs: Oh , _ fifteen _ thousand or ...
Briggs: No
Briggs: . It 's not possible !
Example Output: silos

Example Input: Inspector Lt. Mankiewicz:  Let me get this straight ... you and your wife were attacked by four muggers and then all of a sudden this guy comes out from nowhere and begins shooting , killing these _ two _ here ... and you do n't know what he looks like ?
Tourist: He saved our lives dammit ! Where were you , giving out parking tickets ?
Inspector Lt. Mankiewicz: I want a description of that guy looked like !
Tourist: He was a very good citizen !
Inspector Lt. Mankiewicz: I do n't care ! He was a killer !
Example Output: muggers

Example Input: Darlene Conner:  Name one good thing that could come out of this whole mess !
Roseanne Conner: Okay , I can name _ three _ . Becky , D.J. , and what 's that other kid 's name ? You know the kind of bratty one ?
Darlene Conner: Mom !
Roseanne Conner: No , it 's not Mom . It 's ... what is it ?
Darlene Conner: ... Darlene .
Example Output:
thing