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.
Q: Martha Jones:  Thing is , though , am I missing something here ? The world did n't end in 1599 . It just did n't . Look at me , I 'm living proof .
The Doctor: Oh , how to explain the mechanics of the infinite temporal flux . I know : Back to the Future . It 's like Back to the Future .
Martha Jones: The film ?
The Doctor: No , the novelisation ! Yes , the film ! Marty McFly goes back and changes history .
Martha Jones: And he starts fading away- Oh my God , am I gon na fade ?
The Doctor: You and the entire future of the human race . It ends right now in _ 1599 _ if we do n't stop it .
A:
YEAR