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 _. There are several possible answers, you'll need to choose the proper one. Carefully read the given text, pay special attention to the marked number, think about what (unwritten) information the marked number holds inside, choose the most adequate word(s) from the optional answers. If none of them seems right to you, there's also an option for other. If your answer is "REFERENCE", also write the reference entity, otherwise write the implicit option name. Options to choose from are:
REFERENCE: Some object which is being mentioned in the text before or after the target number. The reference answer has a higher priority than any other. If both Reference and another answer are possible, prioritize the Reference.
YEAR: Describing a calendric year
AGE: Describing someone's age
CURRENCY: Reference to some monetary value e.g dollar, euro etc.
PEOPLE: Describing a single/plural persons
TIME: Describing a time of the day. Usually you can add the word o'clock after those numbers.
OTHER: Some other option, which isn't listed here.

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 .
REFERENCE number

Gloria:  That bathroom is filthy . Who was the last _ one _ in there ? You ! Go back there and wipe the seat !
PEOPLE

Kelly:  Brooke , I 've been looking all over for you .
Brooke Morgan: Here I am .
Kelly: You are not gon na believe what I found out .
Brooke Morgan: He 's my geography assignment . Give it to your sister for me , would you ?
Kelly: Forget about geography .
Brooke Morgan: I 'll pay her $ 10 tomorrow and she 'll get the other _ 10 _ .
Kelly: Brooke , listen to me . I found out what happened on Friday night .
Brooke Morgan: You mean with Matt ?
Kelly: It 's incredible . I mean it 's totally incredible .
Brooke Morgan: What is it ?
Kelly: You 're absolutely not gon na believe it .
Brooke Morgan: Kelly !
Kelly: It turns out Matt 's a hopeless alcoholic .
Brooke Morgan: What ?
Kelly: He was dead drunk on Friday night and apparently he does this all the time .
Brooke Morgan: You 're kidding .
Kelly: I did n't get the whole story but it sounds like he nearly died of alcohol poisoning .
Brooke Morgan: Where did you hear this ?
Kelly: From Jake and Ashley , Matt 's best friend and little miss perfect .
Brooke Morgan: You mean they actually told you ? Hang on . Where are you going ?
Kelly: Oh , nowhere . Nowhere at all .
CURRENCY