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: Serena van der Woodsen:  Hey B.
Blair Waldorf: What are you doing here ?
Serena van der Woodsen: In the neighborhood .
Blair Waldorf: Can we talk later ? Despite your best efforts to ruin it I 'm actually having a good day and I do n't want anything to spoil it . Guess who asked me to visit ' The Captain ' with him ?
Serena van der Woodsen: I dunno Nate ?
Blair Waldorf: Yes , it 's like he finally needs me and he is n't afraid to ...
Serena van der Woodsen: Look B I understand why your reluctant to burst your happy bubble but I 'm not giving up .
Blair Waldorf: Well sorry if unlike some people I haven't been on the pill since I was _ 15 _ .
Serena van der Woodsen: Ok I am giving up . Before you start planning your perfect night with Nate do n't you think you should ...
Blair Waldorf: I 'm not pregnant Serena !
A:
AGE