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.

[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 .
[A]: number


[Q]: Arvin Sloane:  He had so many brilliant creations . Rambaldi . But there was _ one _ in particular , a machine . He called it " il dire " - the telling . The construction consists of forty - seven pieces . Classic Rambaldi . As you know , it took me a long time , longer than I thought , but I 've acquired them all , including the Di Regno heart with your help . They 're in the next room , Jack . I have a team assembling " il dire " right now . They said it should n't be more than a day .
Jack Bristow: And then what ?
Arvin Sloane: I 've seen things recently . I 've seen what 's possible . There 's a change coming , Jack . Something even I could n't imagine .
[A]: creations


[Q]: Dr. Jack Hodgins:  You hear that something has a one in a thousand chance or _ one _ in 10000 . But I guess it 's like the lottery , right ? Someone always wins , you know ?
Angela Montenegro: That sounds like good news .
Wendell Bray: I 'll give you the room .
[A]:
chance