You will be given a definition of a task first, then some input of the task.
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.

Oz:  You know the reason I left this country in the first place , divvn't you , eh ? I 'll tell you . In a word , Margaret bloody Thatcher , that 's why . Because I 'd had it , I was up to there with what she 'd created . Bloody wasteland . Desolate . Nae joy , nae hope , nae nowt . Where kids get to _ 21 _ and have never done a day 's work in their life . Honest men have to go out thieving to feed their families . Young bairns can buy heroin in the bike sheds at school . Oh , dear . But I thought , " Nah , nah , nah . It 's got to be getting better . It cannae be as bad as what it was , can it ? " I was willing to give you lot the benefit of the doubt on this one , you know . But no , no , no . What happens ? What happens is I 've been back on my native soil for fourteen minutes , and I 'm subjected to this act of fascist intimidation ! ' Cos that 's what it is , you know ! That 's what it is , and I 'll be writing to my MP about this !
Customs Officer: Spread .
Oz: What
Oz: do you think you 're going to find up there , eh ? A new striker for Newcastle United ?
Output:
AGE