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 Q]: Lt. Reed: All we have left is to reset the emitters .
Lieutenant Talas: What 's the frequency ?
Lt. Reed: I 'll do it .
Lieutenant Talas: You do n't trust me .
Lt. Reed: No offence , but when it comes to our weapons frequencies , I would n't trust my own mother .
Lieutenant Talas: Is your mother considered a security risk ?
Lt. Reed: It 's just an expression .
Lieutenant Talas: An odd _ one _ . My mother 's security clearance is higher than mine .
[EX A]: expression

[EX Q]: DC Endeavour Morse: Strange , there 's a blackboard there . Could you ... ? Each element is assigned a symbol : Typically an abbreviation of its name together with a unique one or two - digit atomic number . Can you write these down as I call then off ? So , 74 gives us Tungsten . _ 17 _ , Chlorine . 18 , Argon . 19 , Potassium . The elements spell out a name .
Chief Superintendent Bright: T.C.A.P Tucap ?
DC Endeavour Morse: No , not quite , sir , but you 're on the right lines .
DC Endeavour Morse: Um
DC Endeavour Morse: , the chemical symbol for Tungsten is n't Tu as you might expect . It 's W from the German Wolframite . And Potassium is n't P as you might expect but K after the Latin Kalium . Taken together they 're Tungsten ...
DC Endeavour Morse: ...
DC Endeavour Morse: Chorine ...
DC Endeavour Morse: ...
DC Endeavour Morse: Argon ...
DC Endeavour Morse: ...
DC Endeavour Morse: and Potassium .
DC Endeavour Morse: W
DC Endeavour Morse: - C - L - A - R - K. Wallace Clark .
Chief Superintendent Bright: Good
Chief Superintendent Bright: grief .
DI Fred Thursday: Derek 's father .
Chief Superintendent Bright: But there 's nothing to say he even knew the vicar .
DC Endeavour Morse: Ivy Clark , sir . Wallace 's wife is buried in the churchyard . The next plot but one to Lady Daphne Sloan . Reverend Monkford performed the service .
PC Jim Strange: Bloody hell , matey . That 's ...
DI Fred Thursday: Elementary .
[EX A]: number

[EX Q]: Jennifer Jareau: So , Garcia discovered part of Dolan 's military records were encrypted . I just got the complete file from the Pentagon ; he was n't a clerk , he was a Navy SEAL .
David Rossi: Well , let me guess : Adam Werner was , too .
Jennifer Jareau: Yeah , Werner was the SEAL team leader , Dolan was his number two . Their unit was part of JSOC ; they were involved in over twenty highly classified missions .
David Rossi: Which missions were in 2000 ?
Jennifer Jareau: Uh ... only _ one _ , Operation Dorado Falls .
David Rossi: See what you can find out about it .
Jennifer Jareau: Will do .
Aaron Hotchner: That changes the profile .
David Rossi: Definitely .
Jennifer Jareau: How so ?
David Rossi: Navy SEALs are screened carefully for vulnerability to PTSD ; they 're resistant to it .
Jennifer Jareau: Okay , so why would a trained Navy SEAL kill his commanding officer and his own parents ?
Aaron Hotchner: I do n't know , but it 's gon na be a lot harder to find him .
David Rossi: Very few people on this planet are capable of stopping him .
[EX A]:
missions