TASK DEFINITION: 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.
PROBLEM: Michel Dorn:  We just celebrated Detective McConnell 's 30th birthday . He was _ three _ in 1987 . Same age as your twins .
Miles Lennon: Yeah , well , at least he got to be 30 .

SOLUTION: AGE

PROBLEM: Bob Rueland:  Elizabeth and I were married by the time we were twenty and we 'd been going out since we were _ fifteen _ so this may sound a bit juvenile but ... can I hold your hand ?

SOLUTION: AGE

PROBLEM: Lord Peter Wimsey:  Facts , Bunter , must have facts . When I was a small boy , I always hated facts . Thought they were nasty , hard things , all nobs .
Mervyn Bunter: Yes , my lord . My old mother always used to say ...
Lord Peter Wimsey: Your mother , Bunter ? Oh , I never knew you had _ one _ . I always thought you just sort of came along already - made , so it were . Oh , excuse me . How infernally rude of me . Beg pardon , I 'm sure .
Mervyn Bunter: That 's all right , my lord .
Lord Peter Wimsey: Thank you .
Mervyn Bunter: Yes indeed , I was one of seven .
Lord Peter Wimsey: That is pure invention , Bunter , I know better . You are unique . But you were going to tell me about your mater .
Mervyn Bunter: Oh yes , my lord . My old mother always used to say that facts are like cows . If you stare them in the face hard enough , and they generally run away .
Lord Peter Wimsey: By Jove , that 's courageous , Bunter . What a splendid person she must be .
Mervyn Bunter: I think so , my lord .

SOLUTION:
REFERENCE mother