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.
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Question: CO CDR Tom Chandler: Only one thing I hate more than seeing a submarine on sonar .
XO Mike Slattery: What 's that ?
CO CDR Tom Chandler: * Not * seeing _ one _ .

Answer: submarine

Question: Marty Deeks: Okay , so then why 's he carrying a _ 0.22 _ ? It 's a girl 's gun .
Kensi Blye: I 'm a girl .
Marty Deeks: Well , you 're not a real girl . You 're like - you 're like Wonder Woman . And Wonder Woman would n't carry a 0.22 .
Kensi Blye: Compliment accepted .

Answer: gun

Question: Elliot DiMauro: What is going on here ?
Jack Gallo: The ring got stuck on his toe .
Dennis Finch: There 's a simple explanation for this .
Elliot DiMauro: Really ? I ca n't wait to hear it .
Dennis Finch: I was in the tub , and I was pretending that my feet were getting married to each other .
Jack Gallo: Then he called me and I came over to help .
Dennis Finch: It could have happened to anyone .
Elliot DiMauro: Oh , yeah ? Name one time .
Elliot DiMauro: I think it happened on an " ER . "
Dennis Finch: I saw that _ one _ . It really brought the hospital together .
Jack Gallo: They 're a very tight - knit group .
Elliot DiMauro: Will you please stop it ?

Answer:
ER